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Machine Screw

Introduction

A machine screw is generally a smaller fastener (less than 1/4 inch (6.35 mm) in diameter) threaded the entire length of its shank that usually has a recessed drive type. Machine screws are also made with socket heads, in which case they may be referred to as socket head machine screws.

Types of Machine Screw

Pan, CSK, Cheese Head/Round Head Slotted Screw, CSK Philips, Slotted round head, Combo round head, One way round head, Star pin-in button head, Star drive pan head, Spanner pan head, Phillips flat head, Slotted flat head, Star drive flat head type F (trailer screws), Star drive flat head, Spanner flat head, Phillips oval head, Slotted oval head, Spanner oval head, Phillips truss head, Slotted truss head, Combo truss head, Star drive truss head, Star pin-in flat head, Star drive pan head type F (trailer screws), Slotted hex washer head type F Screws.

Specification of Machine Screw:

  • Dimension: ASTM, DIN, BS, GB, IS and all International Standards

  • Length: 3mm to 100mm

  • Machine Screw Size: M1.6 to M64 | Custom Sizes

  • Test pressure : 2.4 to 3 Mpa

  • Heat Treatment: Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.

Grades

Grades

Stainless Steel
304 / 304L,
316 / 316L, 321
Inconel
600, 601, 625,
800, 825
Titanium
Grade 2, Grade 5
Alloy Steel
HT 4.6
Hastelloy
C276, C22
Duplex Steel
S31803, S32205,
S32750, S32760
Monel
400, K500
Other
Alloy 20,
SS 17–4PH / 15–5PH