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Fastener Sets & Assemblies › Assortment Kits & Mixed Fastener Sets

Sems with Lock Washer Curved Spring Washers for Screw Assemblies

Updated 2026-11-04 · Markdown version

Model no. 111

US$0.012 – 1.20 / piece

MOQ 1,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Head Style: Socket Head
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Grade: 4.8
Package Size: 25.00cm * 20.00cm * 20.00cm
Diameter: 1/4"-2 1/2",M4-M64
Length: ≤800mm or 30"
Thread: M,UNC,UNF

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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
Material	Carbon Steel
Type	Round Head
Model NO.	111
Groove	Cinquefoil
Connection	Common Bolt
Head Style	Socket Head
Standard	DIN, GB, ANSI, BSW, JIS, GOST
Grade	4.8
Payment Term	30% T/T
Delivery Time	30-45 Days
Delivery Term	Fob/CIF/DDP
Service	OEM/ODM
Transport Package	Plastic Bag+ Carton+Wood Pallet
Specification	1/4"-2 1/2", M4-M64
Origin	Shanghai, China
Production Capacity	1000 Tons/Month
Package Size	25.00cm * 20.00cm * 20.00cm
Package Gross Weight	25.000kg
Diameter	1/4"-2 1/2",M4-M64
Length	≤800mm or 30"
Thread	M,UNC,UNF
Finish	Plain,Black oxide, Zinc Plated(Clear/Blue/Yellow/Black), H.D.G, Nickel, Chrome,PTFE,Dacromet,Geomet,Magni,Zinc Nickel,Zinteck.
Packing	bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Equipments	Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter
Supply Ability	1000 tons per month
MinimumOrder	according to customer demand
Trade Term	FOB/CIF/CFR/CNF/EXW/DDU/DDP
Payment	T/T, L/C,West union,Paypal.etc
Market	Europe/South&north Amrica/East&South east Asia/Middle East/Australia and ect.
Professional	More than 10 years experience in fasteners industry Our Main market is North&South America and proficient in DIN/ASME/ASTM/IFI standard.
Our advantage	One-stop shopping; High quality; Competitive price; Timely delivery; Technical support; Supply Material and Test Reports; Samples for free
Notice	Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us
All our processes strictly adhere to ISO9001	2008 procedures. We have strict quality control from producing to delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality , good at modern concept of management.
Standard parts	7-15days
Non-standard parts	15-25days
Category	Assortment Kits & Mixed Fastener Sets

Technical parameters

Standard:	ASME/ANSI B 18.2.1,IFI149,DIN931,DIN933,DIN558, DIN601,DIN960, DIN961, ISO4014,ISO4017
Diameter:	1/4"-2 1/2",M4-M64
Length:	≤800mm or 30"
Material:	Carbon Steel, Alloy Steel, Stainless Steel, Brass
Grade:	SAE J429 Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9;A2-70,A4-70,A4-80
Thread:	M,UNC,UNF
Finish:	Plain,Black oxide, Zinc Plated(Clear/Blue/Yellow/Black), H.D.G, Nickel, Chrome,PTFE,Dacromet,Geomet,Magni,Zinc Nickel,Zinteck.
Packing:	bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Application:	Structural Steel; Metal Buliding; Oil&Gas;Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Equipments:	Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter
Supply Ability:	1000 tons per month
MinimumOrder:	according to customer demand
Trade Term:	FOB/CIF/CFR/CNF/EXW/DDU/DDP
Payment:	T/T, L/C,West union,Paypal.etc
Market:	Europe/South&north Amrica/East&South east Asia/Middle East/Australia and ect.
Professional:	More than 10 years experience in fasteners industry Our Main market is North&South America and proficient in DIN/ASME/ASTM/IFI standard.
Our advantage:	One-stop shopping; High quality; Competitive price; Timely delivery; Technical support; Supply Material and Test Reports; Samples for free
Notice:	Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us

Description

Sems with Lock Washer Curved Spring Washers for Screw Assemblies is part of our assortment kits & mixed fastener sets range (Fastener Sets & Assemblies).

Key details

Type: Round Head
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Material: Carbon Steel
Grade: 4.8
Diameter: 1/4"-2 1/2",M4-M64
Thread: M,UNC,UNF
Length: ≤800mm or 30"
Head Style: Socket Head

Available configurations include material, head style, standard, grade and package size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.012 – 1.20 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 Sems with Lock Washer Curved Spring Washers for Screw Assemblies?

The listed minimum order is 1,000 pieces, at US$0.012 – 1.20 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 Sems with Lock Washer Curved Spring Washers for Screw Assemblies?

Type: Round Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Carbon Steel; Grade: 4.8; Diameter: 1/4"-2 1/2",M4-M64; Thread: M,UNC,UNF. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, head style, standard, grade and package size. 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 assortment kits & mixed fastener sets are available?

The Assortment Kits & Mixed Fastener Sets category lists 3,161 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/

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 →

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US$0.012 – 1.20MOQ 1,000 piecesGet a quote WA