--- title: "Ball-End Hex Keys" description: "Ball-End Hex Keys to ISO 2936 (hexagon socket screw keys): full dimensional table. 10 catalogued sizes with materials and finishes." url: https://engineeringhardware.com/fastener/ball-end-hex-keys/ source: Engineering Hardware & Fasteners --- # Ball-End Hex Keys Tools · Ball-End Hex Keys 10 catalogued sizes, dimensioned to ISO 2936 (hexagon socket screw keys). Pick any row and the technical drawing redraws to it. Ball-End Hex Keys to ISO 2936 (hexagon socket screw keys): the full dimensional table is reproduced below. 10 sizes are held in the table below, and the technical drawing redraws to whichever row you select. - **Standard:** ISO 2936 (hexagon socket screw keys) - **Catalogued sizes:** 10 Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering. ![Ball-End Hex Keys technical product image](https://engineeringhardware.com/wp-content/uploads/2026/09/Ball-End-Hex-Keys.webp) Product catalog ## Related Ball-End Hex Keys products [![Galvanized Fully Threaded Rod Stud Bolt Rod Grade: 4.8 5.8 6.8 8.8 10.9 12.9 Factory Wholesale](https://img.engineeringhardware.com/Galvanized-Fully-Threaded-Rod-Stud-Bolt-Rod-Grade-4-8-5-8-6-8-8-8-10-9-12-9-Factory-Wholesale.webp)](https://engineeringhardware.com/product/galvanized-fully-threaded-rod-stud-bolt-rod-grade-4-8-5-8-6-8-8-8-10-9-12-9-factory/) Double-End & Tap-End Studs ### [Galvanized Fully Threaded Rod Stud Bolt Rod Grade: 4.8 5.8 6.8 8.8 10.9 12.9 Factory Wholesale](https://engineeringhardware.com/product/galvanized-fully-threaded-rod-stud-bolt-rod-grade-4-8-5-8-6-8-8-8-10-9-12-9-factory/) ANSI/ASME B 18.31.2,DIN975,DIN976 · Stainless Steel, Carbon Steel, All… **Price on request**MOQ 1,000 pieces [![Blue Carbon Steel PTFE A193 B7 Stud Bolt with Nuts Xylan Coated Thread Rod Screw Varillas Roscadas](https://img.engineeringhardware.com/Blue-Carbon-Steel-PTFE-A193-B7-Stud-Bolt-with-Nuts-Xylan-Coated-Thread-Rod-Screw-Varillas-Roscadas.webp)](https://engineeringhardware.com/product/blue-carbon-steel-ptfe-a193-b7-stud-bolt-with-nuts-xylan-coated-thread-rod-screw/) Double-End & Tap-End Studs ### [Blue Carbon Steel PTFE A193 B7 Stud Bolt with Nuts Xylan Coated Thread Rod Screw Varillas Roscadas](https://engineeringhardware.com/product/blue-carbon-steel-ptfe-a193-b7-stud-bolt-with-nuts-xylan-coated-thread-rod-screw/) Hexagon Head · DIN, GB, ANSI, JIS **US$0.60 – 1.08**MOQ 10 pieces [![DIN939 Double Ends Stud Bolt with Nuts for Electric Power](https://img.engineeringhardware.com/DIN939-Double-Ends-Stud-Bolt-with-Nuts-for-Electric-Power.webp)](https://engineeringhardware.com/product/din939-double-ends-stud-bolt-with-nuts-for-electric-power/) Double-End & Tap-End Studs ### [DIN939 Double Ends Stud Bolt with Nuts for Electric Power](https://engineeringhardware.com/product/din939-double-ends-stud-bolt-with-nuts-for-electric-power/) Round Head · DIN **US$0.012**MOQ 1,000 pieces [![Stainless Steel 316L Studs, Stainless Steel 316 Stud Bolt, Uns S31600 Threaded Rod, Ss 316/316L Double End Stud Bolt](https://img.engineeringhardware.com/Stainless-Steel-316L-Studs-Stainless-Steel-316-Stud-Bolt-Uns-S31600-Threaded-Rod-Ss-316-316L-Double-End-Stud-Bolt.webp)](https://engineeringhardware.com/product/stainless-steel-316l-studs-stainless-steel-316-stud-bolt-uns-s31600-threaded-rod-ss/) Double-End & Tap-End Studs ### [Stainless Steel 316L Studs, Stainless Steel 316 Stud Bolt, Uns S31600 Threaded Rod, Ss 316/316L Double End Stud Bolt](https://engineeringhardware.com/product/stainless-steel-316l-studs-stainless-steel-316-stud-bolt-uns-s31600-threaded-rod-ss/) Stainless Steel Threaded Rod · DIN, ANSI, GB, JIS **US$3,360 – 4,800**MOQ 1 ton [![DIN975 DIN976 4.8 8.8 10.9 Stainless Steel Threaded Bar Screw Acme Threaded Rod Stud Bolt Price](https://img.engineeringhardware.com/DIN975-DIN976-4-8-8-8-10-9-Stainless-Steel-Threaded-Bar-Screw-Acme-Threaded-Rod-Stud-Bolt-Price.webp)](https://engineeringhardware.com/product/din975-din976-4-8-8-8-10-9-stainless-steel-threaded-bar-screw-acme-threaded-rod-stud/) Double-End & Tap-End Studs ### [DIN975 DIN976 4.8 8.8 10.9 Stainless Steel Threaded Bar Screw Acme Threaded Rod Stud Bolt Price](https://engineeringhardware.com/product/din975-din976-4-8-8-8-10-9-stainless-steel-threaded-bar-screw-acme-threaded-rod-stud/) Carbon Steel · A **US$1.74**MOQ 1,000 pieces [![Hg/T 20613 GB/6175 Threaded Rod Stud Bolt with Two Hex Nuts](https://img.engineeringhardware.com/Hg-T-20613-GB-6175-Threaded-Rod-Stud-Bolt-with-Two-Hex-Nuts.webp)](https://engineeringhardware.com/product/hg-t-20613-gb-6175-threaded-rod-stud-bolt-with-two-hex-nuts/) Double-End & Tap-End Studs ### [Hg/T 20613 GB/6175 Threaded Rod Stud Bolt with Two Hex Nuts](https://engineeringhardware.com/product/hg-t-20613-gb-6175-threaded-rod-stud-bolt-with-two-hex-nuts/) Round Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.06 – 0.36**MOQ 10,000 pieces [View all Double-End & Tap-End Studs →](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) [Full product catalog](https://engineeringhardware.com/products/) ## Materials & Grades Select a material class to see the grades we supply it in. Each designation is listed with its ISO/EN, AISI/SAE, JIS and GB equivalents. Stainless Steel38 Carbon Steel66 Alloy Steel41 Bearing Steel5 Spring Steel25 Aluminum and Aluminum Alloys21 Brass17 Bronze11 Copper8 Titanium and Titanium Alloys18 Nickel and Nickel Alloys22 Iron-Nickel and High-Temperature Alloys10 Tool Steel and Specialty Hardened Steel9 Structural and Construction Steel9 ### Stainless Steel #### Austenitic Stainless Steel - A1 AISI 303 · SAE 303 · SUS303 · EN 1.4305 · X8CrNiS18-9 - A2 AISI 304 · SAE 304 · SUS304 · EN 1.4301 · X5CrNi18-10 · 06Cr19Ni10 - 304L AISI 304L · SUS304L · EN 1.4307 · X2CrNi18-9 · 022Cr19Ni10 - 302 AISI 302 · SUS302 · EN 1.4310 - 305 AISI 305 · SUS305 · EN 1.4303 - A4 AISI 316 · SAE 316 · SUS316 · EN 1.4401 · X5CrNiMo17-12-2 · 06Cr17Ni12Mo2 - 316L AISI 316L · SUS316L · EN 1.4404 · X2CrNiMo17-12-2 · 022Cr17Ni12Mo2 - 321 AISI 321 · SUS321 · EN 1.4541 · X6CrNiTi18-10 - 310 / 310S AISI 310 · AISI 310S · SUS310S · EN 1.4845 - 302HQ AISI 302HQ - A3 - A5 - 347 AISI 347 · SUS347 · EN 1.4550 · X6CrNiNb18-10 - 309 / 309S AISI 309 · AISI 309S · SUS309S #### Martensitic Stainless Steel - AISI 410 SUS410 · EN 1.4006 · X12Cr13 · 12Cr13 - AISI 420 SUS420J1 · SUS420J2 · EN 1.4021 · EN 1.4028 · 20Cr13 · 30Cr13 - AISI 431 SUS431 · EN 1.4057 · X17CrNi16-2 - C1 - C3 - C4 - AISI 440A - AISI 440B - AISI 440C SUS440C · EN 1.4125 #### Ferritic Stainless Steel - AISI 430 SUS430 · EN 1.4016 · X6Cr17 · 10Cr17 - F1 - AISI 434 - AISI 444 #### Precipitation-Hardening Stainless Steel - 17-4 PH AISI 630 · UNS S17400 · SUS630 · EN 1.4542 · X5CrNiCuNb16-4 - 15-5 PH UNS S15500 - 17-7 PH UNS S17700 #### Duplex and Super Duplex Stainless Steel - Duplex 2205 UNS S31803 · UNS S32205 · EN 1.4462 - Super Duplex 2507 UNS S32750 · EN 1.4410 - D2 - D4 - D6 - D8 - Lean Duplex 2101 UNS S32101 - Super Duplex S32760 UNS S32760 · EN 1.4501 ### Carbon Steel #### Low-Carbon Steel - SAE 1006 - SAE 1008 - SAE 1010 - SAE 1018 - SAE 1020 - Q195 - Q235 - SAE 1012 - SAE 1015 - Q215 - ML08 - ML08Al - ML10 - ML15 - ML20 - SWRCH6A - SWRCH8A - SWRCH10A - SWRCH12A - SWRCH15A - SWRCH18A #### Medium-Carbon Steel - SAE 1035 - SAE 1045 - S45C - C45 - SAE 1030 - SAE 1040 - SAE 1050 - 30 - 35 - 40 - 45 - 50 - S35C - S40C - S50C - C35 - C40 #### High-Carbon Steel - SAE 1060 - SAE 1070 - 65Mn - SAE 1065 - SAE 1075 - SAE 1080 - SAE 1085 - SAE 1090 - SAE 1095 - 60 - 65 - 70 - 75 - 80 - 85 #### Cold-Heading Steel - SWRCH22A - 10B21 - SWRCH22K - SWRCH25K - SWRCH30K - SWRCH35K - SWRCH40K - ML20Mn - ML25 - ML30 - ML35 - ML40 - 15B25 ### Alloy Steel #### Chromium Steel - 40Cr - 45Cr - AISI 5140 - SAE 5140 - AISI 5120 - SAE 5120 - SCr420 - SCr440 #### Chromium-Molybdenum Steel - 35CrMo - 42CrMo - AISI 4140 - SCM435 - SCM440 - 42CrMo4 - 30CrMo - AISI 4130 - SAE 4130 - SAE 4140 - AISI 4142 - AISI 4145 - SCM415 - SCM420 - SCM445 - EN 1.7220 - EN 1.7225 - 25CrMo4 - 34CrMo4 #### Nickel-Chromium-Molybdenum Steel - AISI 4340 - SAE 4340 - 40CrNiMo - SNCM439 - EN 1.6511 - 36CrNiMo4 #### Boron Alloy Steel - 10B22 - 10B21 - 15B21 - 15B25 - 20MnTiB - 20Mn2B - 35VB - 40MnB ### Bearing Steel #### Bearing Steel - GCr15 - AISI 52100 SAE 52100 · UNS G52986 - SUJ2 - 100Cr6 EN 1.3505 - GCr15SiMn ### Spring Steel #### Carbon Spring Steel - SAE 1065 - SAE 1070 - SAE 1075 - SAE 1080 - SAE 1095 - 65 - 70 - 75 - 80 - 65Mn #### Silicon-Manganese Spring Steel - 60Si2Mn - 60Si2MnA - SUP6 - SUP7 #### Chromium-Vanadium Spring Steel - 50CrVA - SAE 6150 - AISI 6150 - SUP10 #### Stainless Spring Steel - AISI 301 - SUS301 - EN 1.4310 - AISI 302 - AISI 304 - AISI 316 - 17-7 PH ### Aluminum and Aluminum Alloys #### Commercially Pure Aluminum - 1050 - 1060 - 1070 - 1100 #### 2xxx Series Aluminum - 2024 - 2011 - 2014 - 2017 #### 5xxx Series Aluminum - 5052 - 5083 - 5754 #### 6xxx Series Aluminum - 6061 - 6061-T6 - 6063 - 6082 - 6082-T6 #### 7xxx Series Aluminum - 7075 - 7075-T6 - 7005 - 7050 - 7075-T73 ### Brass #### Free-Cutting Brass - C36000 - H62 - HPb59-1 - C3601 - C3602 - C3604 - CuZn36Pb3 - CuZn39Pb3 - EN CW614N - EN CW617N - H65 #### Lead-Free Brass - C69300 - C27450 - CW510L - CW511L #### Naval Brass - C46400 - CuZn39Sn1 ### Bronze #### Silicon Bronze - C65500 - C65100 - C65600 #### Phosphor Bronze - C51000 - C52100 - CuSn6 - CuSn8 #### Aluminum Bronze - C95400 - C95500 - C63000 - CuAl10Ni5Fe4 ### Copper #### Copper - C11000 - T2 - C10100 - C10200 - C12200 - T1 - TU1 - TU2 ### Titanium and Titanium Alloys #### Commercially Pure Titanium - Grade 2 - Grade 1 - Grade 3 - Grade 4 - TA1 - TA2 - TA3 #### Alpha-Beta Titanium Alloys - Grade 5 - Ti-6Al-4V - TC4 - UNS R56400 #### Low-Interstitial Grade - Grade 23 - Ti-6Al-4V ELI - UNS R56407 #### Other Titanium Fastener Alloys - Ti-6Al-6V-2Sn - Ti-6Al-2Sn-4Zr-2Mo - Beta-C titanium - Ti-10V-2Fe-3Al ### Nickel and Nickel Alloys #### Commercially Pure Nickel - Nickel 200 - UNS N02200 - Nickel 201 - UNS N02201 #### Inconel Alloys - Inconel 625 UNS N06625 - Inconel 718 UNS N07718 - Inconel 600 UNS N06600 - Inconel 601 UNS N06601 - Inconel 686 UNS N06686 - Inconel X-750 UNS N07750 #### Monel Alloys - Monel 400 UNS N04400 - Monel K-500 UNS N05500 #### Hastelloy Alloys - Hastelloy C-276 UNS N10276 - Hastelloy C-22 UNS N06022 - Hastelloy B-2 UNS N10665 - Hastelloy B-3 UNS N10675 - Hastelloy X UNS N06002 #### Other Nickel Alloys - Alloy 20 UNS N08020 - Alloy 625 - Alloy 718 - Alloy 825 UNS N08825 - Alloy 925 UNS N09925 ### Iron-Nickel and High-Temperature Alloys #### A286 - A-286 - UNS S66286 - EN 1.4980 #### Invar - Invar 36 - Alloy 36 - UNS K93600 - FeNi36 #### Alloy 42 - Alloy 42 - UNS K94100 - FeNi42 ### Tool Steel and Specialty Hardened Steel #### Tool Steel and Specialty Hardened Steel - AISI D2 - AISI H13 - SKD11 - Cr12MoV - AISI O1 - AISI A2 - AISI S7 - SKD61 - 9CrSi ### Structural and Construction Steel #### Structural and Construction Steel - ASTM A36 - Q235B - Q355B - S355JR - Q235C - Q355C - S235JR - S275JR - S355J2 ## Applications & Industries Where Ball-End Hex Keys are used, and what decides the specification in each case. Stocked from 1.5 mm to 14.0 mm (nominal size). ### Industries that specify Ball-End Hex Keys - **Machine building:** Screws behind castings and guards. - **Maintenance:** Access without stripping the assembly. - **Bicycle and equipment service:** Angled approach to recessed screws. - **Electronics assembly:** Small sockets in crowded enclosures. - **Assembly & maintenance:** Installing and servicing the fasteners in this catalog. ### Typical applications - running a screw down with the ball end, then finishing with the plain end - keeping the offset within about 25 degrees - replacing a key whose ball has rounded - choosing a long-arm key where the screw sits deep - driving and releasing fasteners on the bench and in the field ### Where to use something else - Do not tighten to final torque on the ball end; the contact area is a fraction of the plain end and it will round the socket. [Full application guide: where Ball-End Hex Keys are used, how to specify them, and the cases they are wrong for](https://engineeringhardware.com/applications/ball-end-hex-keys/) ## Technical Drawing Dimensioned line drawing of 1.5 mm Ball-End Hex Keys to ISO 2936 (hexagon socket screw keys). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected. - **Mating socket screw:** M2 socket head cap screw - **Ball end used for:** reaching and running down at an angle - **Plain end used for:** final tightening ## Dimensions & Specifications (ISO 2936 (hexagon socket screw keys)) Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row. | Key size across flats | Mating socket screw | Ball end used for | Plain end used for | | --- | --- | --- | --- | | 1.5 mm | M2 socket head cap screw | reaching and running down at an angle | final tightening | | 2.0 mm | M2.5 socket head cap screw | reaching and running down at an angle | final tightening | | 2.5 mm | M3 socket head cap screw | reaching and running down at an angle | final tightening | | 3.0 mm | M4 socket head cap screw | reaching and running down at an angle | final tightening | | 4.0 mm | M5 socket head cap screw | reaching and running down at an angle | final tightening | | 5.0 mm | M6 socket head cap screw | reaching and running down at an angle | final tightening | | 6.0 mm | M8 socket head cap screw | reaching and running down at an angle | final tightening | | 8.0 mm | M10 socket head cap screw | reaching and running down at an angle | final tightening | | 10.0 mm | M12 socket head cap screw | reaching and running down at an angle | final tightening | | 14.0 mm | M16 socket head cap screw | reaching and running down at an angle | final tightening | Ball-End Hex Keys conform to ISO 2936 (hexagon socket screw keys). As tools, they are specified by the dimensions in the table below; this page also covers materials, finishes and typical uses. ## What Are Ball-End Hex Keys? Ball-End Hex Keys are tools defined by ISO 2936 (hexagon socket screw keys). They are selected by nominal size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment. ## Materials & Finishes Common materials include carbon steel (typically zinc plated or hot-dip galvanized), hardened or case-hardened steel where wear matters, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, hardness where relevant, and the surface finish appropriate to your application and environment. ## Specification Guides Each size, material and standard of Ball-End Hex Keys has its own reference page with the figures for that one configuration. ## Goes With Hardware commonly specified alongside Ball-End Hex Keys. ## Pricing Ball-End Hex Keys are supplied to order. Pricing starts from approximately US$0.35 per piece for standard sizes in the catalog specification; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above. Custom manufacturing · Made to drawing ## Need a ball-end hex keys outside the standard range? Dimensions, material, finish and form are specified from the drawing — a fastener tool outside the standard range is a variation on existing tooling rather than a new design. Minimum order from 2,000 pieces; samples within 7 days of drawing approval. [Custom fastener tool manufacturing](https://engineeringhardware.com/custom/tools/)[Send a drawing](https://engineeringhardware.com/custom/tools/#rfq) Inside the plant ## Manufactured in our own plant This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided. 1. ![Wire rod feeding into a cold heading machine](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 01 **Cold heading** Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail. Head dimensions and under-head radius checked at set-up and per shift. 2. ![Thread rolling machine producing bolt threads](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 02 **Thread rolling** Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch. Go / no-go ring gauges to ISO 965 tolerance class 6g. 3. ![Baskets of bolts staged for heat treatment](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 03 **Heat treatment** Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it. Core hardness and tensile tested per lot to ISO 898-1. 4. ![Zinc plated bolts in a treatment basket](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 04 **Surface treatment** Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list. Coating thickness and neutral salt spray hours to ISO 9227. ## Frequently Asked Questions ### Which standard governs Ball-End Hex Keys? Ball-End Hex Keys are manufactured to ISO 2936 (hexagon socket screw keys). The dimensional values on this page follow that standard. ### Which sizes of Ball-End Hex Keys does Engineering Hardware supply? The table on this page lists 10 sizes for Ball-End Hex Keys, ranging from 1.5 mm to 14.0 mm. Sizes outside the table can be quoted on request. ### In which materials are Ball-End Hex Keys supplied? Ball-End Hex Keys are supplied in chrome-vanadium steel, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for Ball-End Hex Keys. ### How do I request a quotation? Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.