Socket Head Screws (SCHS)

Socket Head Screws

Category : Screws

Socket Head Cap Screws also known as Hex Socket Head Cap Screws or acronym SCHS. SCHS are round headed screws with an hex socket in the head for Allen key engagement. Also called as Allen Head Screws. These socket head cap screws are available with knurled head or plain head.

Socket head cap screws are available in metric and imperial sizes up to 4 inch. DIN 912, ISO 4762, ANSI/ASME B18.3 are most common dimension standard for manufacturing Socket Head Cap Screws. ASTM A574 is a known grade specification for producing alloy steel high tensile socket head cap screws.


Sizes and Threads

Forming : Hot & Cold Forged
Size : M1.6 to M100 in Metric, 0.629" to 4" in Imperial
Threads : UNC, UNF, ISO, BSW & ACME
Standards : DIN, ASME, PN, UNI, CSN

Dimension Standards

DIN 912, DIN 6912, DIN 7984, ISO 4762, ISO 14580, ASME B18.3, JIS B1176,

Manufacturing Grades (Other)

High Tensile Grade 8.8, 10.9, 12.9, Stainless Steel, 304, 316, 316ti, 321, 904L, Duplex 2205, S31803, Super Duplex, 2507, S32750, F55, S32760, Zeron 100, Inconel 600, 601, 625, 718, 925, Incoloy 800, 800, 800ht, 825, Hastelloy B2, B3, C22, C276, C2000, X, Monel 400, R405, K500, Titanium Grade 2, 5, 7, 9, 12, 23, Copper Nickel, Silicon Bronze, Aluminum & Phosphor Bronze, Tantalum, etc.

ASTM Specification

ASTM A193, ASTM A307, ASTM A320, ASTM A325, ASTM A354, ASTM A449, ASTM A490, ASTM A574, ASTM A1014, ASTM A1082, ASTM F432, ASTM F468, ASTM F593, ASTM F738, ASTM F2281, ASTM F2403, ASTM F2482, ASTM F2882, ASTM F3125, ASTM A182, ASTM A350, ASTM B381, ASTM B564, ASTM B637, BS EN ISO 3506-1, ISO 898-1.

Compatibility paired with (Other)

Product / Thread System Heavy Hex Bolts Heavy Hex Nuts Hardened Heavy Washers
Imperial ASME B18.2.1 ASME B18.2.2 ASME B18.21.1
Metric ASME B18.3.6M ASME B18.4.6M ASME B18.22M
Metric DIN 6914 DIN 6915 DIN 6916