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Screws › Countersunk & Flat-Head Machine Screws

High-Temperature Resistan 253m Machine Screw Flat Head Socket Screw

Updated 2026-11-04 · Markdown version

US$0.13100–999 pieces

US$0.0961,000+ pieces

MOQ 100 pieces · Final price confirmed in your quote

Head Style: Socket
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Grade: All Kinds
Bolt Material: No7718
Package Size: 21.00cm * 20.00cm * 17.00cm
Material: Martensitic Stainless Steel

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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

Connection	Common Bolt
Head Style	Socket
Standard	DIN, GB, ANSI, BSW, JIS, GOST
Grade	All Kinds
Certificate	ISO9001
Samples	Free Samples
Delivery Time	3-15 Days
MOQ	100PCS
Bolt Material	No7718
Transport Package	Carton
Specification	M5-M100
Origin	China
HS Code	731815
Production Capacity	1000 Tons/Month
Package Size	21.00cm * 20.00cm * 17.00cm
Package Gross Weight	25.000kg
Customization	Available
Material	Martensitic Stainless Steel
Type	Socket
Shipping Cost	Contact the supplier about freight and estimated delivery time.
Operating Temperature	Can operate continuously at 850~1100ºC, strong oxidation resistance
Performance Characteristics	Good high-temperature strength, creep resistance, not prone to oxidation and peeling, moderate corrosion resistance
Applicable Scenarios	Fasteners in high-temperature components such as industrial furnaces, boilers, flues, and heat treatment furnaces
Common Specifications	Hex bolts, studs, mainly with standard threads M6~M48
Metallurgy	Heating furnaces, annealing furnaces, radiant tubes, furnace bottom plate fasteners
Petrochemical	Cracking furnaces, conversion furnaces, high-temperature heat exchangers, burners
Power	Boiler, flue, high-temperature pipeline connections
Industrial Furnaces	Heat treatment furnaces, incinerators, carburizing furnaces
Category	Countersunk & Flat-Head Machine Screws

Technical parameters

Materials	Characteristics	Advantages
Carbon Steel	The strength and hardness can be adjusted through the carbon content and heat treatment, and it has certain toughness and processing performance.	Low cost, easy access to raw materials, simple processing technology, suitable for mass production, and can meet general strength requirements.
Stainless Steel	It has good corrosion resistance and antioxidant properties, can maintain stable chemical and physical properties in various harsh environments, has a bright and beautiful appearance, and is hygienic.	Strong corrosion resistance, can adapt to corrosive medium environments, without the need for additional anti-corrosion treatment, has a long service life.
Alloy Steel	It has relatively high strength, toughness, wear resistance, heat resistance, and other comprehensive properties. Different alloy ratios can meet diverse mechanical performance requirements, and its performance can be significantly improved after heat treatment.	High strength, capable of withstanding large tensile, compressive, and shear forces, suitable for occasions where complex loads and harsh working conditions need to be endured.

Description

High-Temperature Resistan 253m Machine Screw Flat Head Socket Screw is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Socket
Standard: DIN, GB, ANSI, BSW, JIS, GOST
Material: Martensitic Stainless Steel
Grade: All Kinds
Head Style: Socket
Connection: Common Bolt
Certificate: ISO9001
Bolt Material: No7718

Available configurations include head style, standard, grade, bolt material and package size. 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$0.096 – 0.13 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 High-Temperature Resistan 253m Machine Screw Flat Head Socket Screw?

The listed minimum order is 100 pieces, at US$0.096 – 0.13 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$0.13 for 100–999 pieces; US$0.096 for 1,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of High-Temperature Resistan 253m Machine Screw Flat Head Socket Screw?

Type: Socket; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Martensitic Stainless Steel; Grade: All Kinds; Head Style: Socket; 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 head style, standard, grade, bolt material 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 countersunk & flat-head machine screws are available?

The Countersunk & Flat-Head Machine Screws category lists 2,424 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/

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$0.096 – 0.13MOQ 100 piecesGet a quote WA