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Using in Engineering Projects Precision Casting High-Strength Steel Bolts

Updated 2026-11-04 · Markdown version

US$1.20 – 24.00 / piece

MOQ 100 pieces · Final price confirmed in your quote

Material: Superalloy, Aluminum Alloy
Surface Preparation: Polishing/Sand Blast/Spray-Paint
Surface Roughness: Ra 0.8-Ra3.2 According to Customer Requirement
Machining Tolerance: +/-0.01mm
Standard: ASTM

Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Casting Method	None
Process	Investment Casting
Molding Technics	CNC Machining
Application	Machinery Parts/Auto Parts/Hardware
Material	Superalloy, Aluminum Alloy
Surface Preparation	Polishing/Sand Blast/Spray-Paint
Surface Roughness	Ra 0.8-Ra3.2 According to Customer Requirement
Machining Tolerance	+/-0.01mm
Standard	ASTM
Certification	CE, ISO 9001:2000, ISO 9001:2008
Service	Custom Carbon Steel Water Pump Impeller
Transport Package	Packed with Free Fumigating Wooden Case
Specification	Customized
Origin	Shandong, China
Production Capacity	100000 Piece/Pieces Per Month
Category	Structural & Heavy Hex Bolts

Technical parameters

Nominal Size	d	S	k
Major Diameter	Width Across Flats	Head Height
Min.	Max	Max.	Min	Grade A	Grade B
Grade A	Grade B	Min	Max.	Min.	Max
M3	2.874	2.980	5.5	5.32	-	1.88	2.12	-	-
M4	3.838	3.978	7	6.78	-	2.68	2.92	-	-
M5	4.826	4.976	8	7.78	-	3.35	3.65	-	-
M6	5.794	5.974	10	9.78	-	3.85	4.15	-	-
M7	6.794	6.974	11	10.73	-	4.65	4.95	-	-
M8	7.760	7.972	13	12.73	-	5.15	5.45	-	-
M10	9.732	9.968	17	16.73	-	6.22	6.58	-	-
M12	11.701	11.966	19	18.67	-	7.32	7.68	-	-
M14	13.682	13.962	22	21.67	-	8.62	8.98	-	-
M16	15.682	15.962	24	23.67	23.16	9.82	10.18	9.71	10.29
M18	17.623	17.958	27	26.67	26.16	11.28	11.72	11.15	11.85
M20	19.623	19.958	30	29.67	29.16	12.28	12.72	12.15	12.85
M22	21.623	21.958	32	31.61	31	13.78	14.22	13.65	14.35
M24	23.577	23.952	36	35.38	35	14.78	15.22	14.65	15.35
M27	26.577	26.952	41	-	40	-	-	16.65	17.35
M30	29.522	29.947	46	-	45	-	-	18.28	19.12
M33	32.522	32.947	50	-	49	-	-	20.58	21.42
M36	35.465	35.940	55	-	53.8	-	-	22.08	22.92
M39	38.465	38.940	60	-	58.8	-	-	24.58	25.42

Description

Using in Engineering Projects Precision Casting High-Strength Steel Bolts is part of our structural & heavy hex bolts range (Bolts).

Key details

Standard: ASTM
Material: Superalloy, Aluminum Alloy
Application: Machinery Parts/Auto Parts/Hardware
Certification: CE, ISO 9001:2000, ISO 9001:2008
Casting Method: None
Process: Investment Casting
Molding Technics: CNC Machining
Surface Preparation: Polishing/Sand Blast/Spray-Paint

Available configurations include material, surface preparation, surface roughness, machining tolerance and standard. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 100 pieces at US$1.20 – 24.00 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Using in Engineering Projects Precision Casting High-Strength Steel Bolts?

The listed minimum order is 100 pieces, at US$1.20 – 24.00 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Using in Engineering Projects Precision Casting High-Strength Steel Bolts?

Standard: ASTM; Material: Superalloy, Aluminum Alloy; Application: Machinery Parts/Auto Parts/Hardware; Certification: CE, ISO 9001:2000, ISO 9001:2008; Casting Method: None; Process: Investment Casting. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, surface preparation, surface roughness, machining tolerance and standard. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other structural & heavy hex bolts are available?

The Structural & Heavy Hex Bolts category lists 2,565 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

Request a quote for this product

US$1.20 – 24.00MOQ 100 piecesGet a quote WA