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Nuts › Nylon-Insert & All-Metal Lock Nuts

Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts

Updated 2026-11-04 · Markdown version

Model no. Locknuts

US$0.03610,000–49,999 pieces

US$0.02450,000–99,999 pieces

US$0.012100,000+ pieces

MOQ 10,000 pieces · Final price confirmed in your quote

Material: Stainless Steel
Head Style: Hexagonal
Standard: DIN, ANSI, GB, JIS, GOST, BSW
Grade: 8.8
Hex Drive Size: 9/16"; Width From Flat to Flat: 0.551 inch to 0.564 inch; Overall Height: 0.438 inch to 0.468 inch

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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	Stainless Steel
Type	Round Head
Model NO.	Locknuts
Connection	Common Bolt
Head Style	Hexagonal
Standard	DIN, ANSI, GB, JIS, GOST, BSW
Grade	8.8
Fastener Type	Locknuts
Transport Package	Cartons+Plastic Bags
Specification	M1-M16/as Request
Origin	China
Production Capacity	500ton/Montth
Hex Drive Size	9/16"; Width From Flat to Flat: 0.551 inch to 0.564 inch; Overall Height: 0.438 inch to 0.468 inch
Our nut line includes the following	* Finished hex nuts
Category	Nylon-Insert & All-Metal Lock Nuts

Technical parameters

Material	stainless_steel_304
Fastener Type	Lock
Thread Size	3/8"-16
Exterior Finish	Black
Color	Black

Delivery Time	10-30 Days
Sample Service	Samples are all in free.
Advantage	1. Competitive price; 2. Best service available
Packing	Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Or box and cartons and pallets

Description

Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts is part of our nylon-insert & all-metal lock nuts range (Nuts).

Key details

Type: Round Head
Standard: DIN, ANSI, GB, JIS, GOST, BSW
Material: Stainless Steel
Grade: 8.8
Head Style: Hexagonal
Connection: Common Bolt
Fastener Type: Locknuts
Our nut line includes the following: * Finished hex nuts

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 10,000 pieces at US$0.012 – 0.036 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 Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts?

The listed minimum order is 10,000 pieces, at US$0.012 – 0.036 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$0.036 for 10,000–49,999 pieces; US$0.024 for 50,000–99,999 pieces; US$0.012 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts?

Type: Round Head; Standard: DIN, ANSI, GB, JIS, GOST, BSW; Material: Stainless Steel; Grade: 8.8; Head Style: Hexagonal; Connection: Common Bolt. 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 hex drive 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 nylon-insert & all-metal lock nuts are available?

The Nylon-Insert & All-Metal Lock Nuts category lists 2,493 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/

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$0.012 – 0.036MOQ 10,000 piecesGet a quote WA