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Stainless Steel Hex Socket Cap Screw, Half Thread Allen Head Fastener

Place of Origin	GuangDong Dongguan
Brand Name	SITUO
Certification	ISO9001 & TS16949
Model Number	ST-300033

Product Details

Size:

1/4-20

Head Shape:

Circle Head

Processing Technology:

Cold Heading

Material:

Corrosion Resistance:

High

Color:

Customized

Precision:

Min0.01

Surface Treatment:

Passivation

Specification:

Customized

Category:

Screws

Length:

28MM

Sample Period:

10 To 15 Days

Product Name:

Screw

Highlight:

Stainless Steel Hex Socket Cap Screw

Half Thread Allen Head Fastener

CNC Screws with warranty

Payment & Shipping Terms

Minimum Order Quantity

1PCS

Price

5-10 USD per item

Packaging Details

Communication

Delivery Time

Communication

Payment Terms

T/T

Supply Ability

10000PCS per day

Product Description

Stainless Steel Hex Socket Cap Screw, Half Thread Allen Head Fastener

Product Overview

This Stainless Steel Hex Socket Cap Screw with half thread design is a high-quality industrial fastening fastener. Adopting premium stainless steel material, the screw features excellent corrosion resistance, rust-proof performance and high structural toughness. Different from full-thread screws, the half-thread structure retains smooth unthreaded rod body, which is suitable for structural penetration and fixed locking scenarios. The standard hex socket allen head enables high-torque assembly, widely used for mechanical equipment, automation accessories, instrument assembly and industrial structural connection.

Key Product Features

Superior Stainless Steel Material

Manufactured from high-quality stainless steel raw material, the screw has stable metal performance, high hardness and strong tensile strength. It is not easy to deform or break under long-term load and vibration. The material delivers outstanding anti-rust and anti-corrosion ability, adapting to humid, outdoor and conventional industrial environments with long service life.

Professional Half Thread Design

The unique half-thread structure combines smooth rod body and standard threaded section. The unthreaded rod ensures smooth penetration and precise positioning during assembly, avoiding thread friction and damage. The threaded section provides stable locking force, realizing firm fixation while improving assembly flatness and structural matching accuracy, which is more suitable for thick plate and through-hole installation than full-thread screws.

Standard Hex Socket Allen Head

Precision molded hex socket head perfectly matches standard allen wrenches. It supports high-torque tightening operation, effectively preventing tool slipping and head damage. The cylindrical head design features neat appearance and compact structure, suitable for embedded installation and narrow-space assembly scenarios, greatly improving installation efficiency and fastening stability.

Precision Machining & Stable Performance

Adopting professional thread rolling and finishing process, the thread teeth are uniform, neat and burr-free. The screw meshes smoothly and tightly with matching nuts and threaded holes, supporting repeated disassembly and assembly without slipping or tooth loss. The overall size is accurate with high product consistency for batch assembly.

Application Scenarios

✅ Mechanical equipment structural fixing fasteners

✅ Automation equipment frame connection screws

✅ Thick plate and through-hole assembly hardware parts

✅ Precision instrument and electronic equipment fasteners

✅ Outdoor and humid environment anti-rust fastening components

Quality & Service

All stainless steel half thread hex socket screws undergo strict dimensional inspection, thread detection and appearance screening before delivery. We support complete standard specifications supply, small batch trial orders and large batch mass production. Custom processing for special sizes is available to meet diverse industrial assembly and equipment matching demands.

Manufacturing Capabilities

We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines). Our maximum processing outer diameter is 60mm, and the minimum control tolerance is 0.001mm.

Equipment Portfolio: Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment.

Company Scale: 300 employees including 20 technicians, 10 engineers, and 15 quality control personnel with over 300 pieces of equipment.

Quality Certifications: 8S management, ISO9001 and TS16949 automotive certifications.

Notable Customers: Foxconn, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.

Our Capacity

Main Products:

Stainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners.

Business Type:

Factory / Manufacturer

Services:

CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service

Materials:

Aluminum: AL 6061-T6, 6063, 7075-T etc
Stainless steel: 303,304,304L,316L,316F,630,410,420,430, etc
Steel: 4140, Q235, Q345B,20#,45# 1215,12L14,1144,1006,1008,1010,1015,1018,10B21,1035,1065 etc.
Alloy steel: 5140,4135,4140,3435,5120,415,435,440 etc
Titanium: TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc
Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90),C27000,C51900,C11000,C3604,H62,H65 etc
Copper, bronze, Magnesium alloy, Delrin, POM, Acrylic, PC, etc.

Finishes:

Sandblasting, Anodize color, Blackening, Zinc/Nickel Plating, Polish, Powder coating, Passivation PVD, Titanium Plating, Electrogalvanizing, electroplating chromium, electrophoresis, QPQ, Electro Polishing, Chrome Plating, Knurl, Laser etch Logo, etc.

Drawing Formats:

STEP, STP, GIS, CAD, PDF, DWG, DXF etc or samples.

Tolerance:

+/-0.01mm ~ +/-0.05mm

Surface Roughness:

Ra 0.1~3.2

Inspection:

Complete inspection lab with Micrometer, Optical Comparator, Caliper Vernier, CMM, Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge

Product Images