Part Number ST3M557-4-21 Close Tolerance Screw

SKU: 5305015910047

Head has a 1.40 degree radius dome

ST3M557421 Close Tolerance Screw Datasheet

Thread Direction:

Right-hand

Thread Length:

0.469 inches

Fastener Length:

Between 1.767 inches and 1.797 inches

Head Style:

Fillister countersunk

Head Diameter:

Between 0.390 inches and 0.395 inches

Head Height:

0.015 inches

Grip Diameter:

0.249 mils and 0.250 centimeters

Point Length:

0.045 inches

Point Style:

Flat

Internal Drive Style:

High-torque

Thread Diameter:

0.250 inches

Grip Length:

1.313 inches

Thready Qty Per Inch (tpi):

Countersink Angle:

Between 99.0 degrees and 101.0 degrees

Point Chamfer Angle:

45.0 of standard range single treatment response

Part Name Assigned By Controlling Agency:

Screw, close tolerance, 100 degrees countersunk, reduced head, hi-torque, non-magnetic cres (125 ksi fsu)

Material Specification:

Ams 5662 assn standard single material response

Surface Treatment Specification:

Ams 2700, method 1 assn standard single treatment response

Manufacturer Cage:

76301

Trade Information:

Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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