Socket Head Cap Screw

Model / MPN: 20774-001 FIND 31 | NSN: 5305-01-288-9356

An externally threaded fastener whose threaded portion is of one diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Product Details

NATO Stock Number

5305-01-288-9356

Sold in multiples of

1 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

1.375 inches

Fastener Length

Between 4.420 inches and 4.500 inches

Head Style

Flat chamfer

Head Diameter

Between 0.642 inches and 0.656 inches

Head Height

Between 0.430 inches and 0.437 inches

Hole Diameter

Between 0.061 inches and 0.067 inches

Internal Drive Style

Hexagon

Thread Diameter

0.438 inches

Width Across Flats

Between 0.375 inches and 0.379 inches

Hole Quantity

Hole Type

Drilled

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

39.0 rockwell c and 45.0 rockwell c

Minimum Yield Strength

155000 pounds per square inch

Hole Configuration Style

Round internal hexagon

Material

Steel

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2 class 2 federal specification single treatment response

Thread Series Designator

Unrf

Specification Data

80205-nas1351 professional/industrial association standard

20774 Series Parts

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

20774-001 FIND 31 Cross Reference

NAS1351-7H72P
20874-001 FIND 23