Socket Head Cap Screw

Model / MPN: 289E621PC27 | NSN: 5305-01-386-8143

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

5305-01-386-8143

Sold in multiples of

1 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.438 inches and 0.500 inches

Fastener Length

Between 0.470 inches and 0.500 inches

Head Style

Knurled no. 1

Head Diameter

Between 0.262 inches and 0.270 inches

Head Height

Between 0.159 inches and 0.164 inches

Internal Drive Style

Hexagon

Thread Diameter

0.164 inches

Width Across Flats

0.141 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

190000 pounds per square inch

Hardness Rating

38.0 rockwell c threads and 43.0 rockwell c threads

Minimum Yield Strength

170000 pounds per square inch

Material

Steel uns k03104

Material Specification

Astm a574 assn standard single material response

Thread Series Designator

Unrc

289E Series Parts

289E621PC27

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

289E621PC27 Cross Reference

20097-98C-8
20097-98C-8