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Worldwide distributor of NSN parts and consumables located in the USA.

Socket Head Cap Screw

Model / MPN: 27172 | NSN: 5305-01-192-6379
ITAR Registered seal

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
5305-01-192-6379
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Fastener Length
1.250 inches
Head Style
Flat countersunk
Head Diameter
Between 0.480 inches and 0.531 inches
Locking Feature
Strip threads or patch threads or pellet threads
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
0.156 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
170000 pounds per square inch
Hardness Rating
38.0 rockwell c and 45.0 rockwell c
Minimum Yield Strength
150000 pounds per square inch
Countersink Angle
Between 80.0 degrees and 84.0 degrees
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
Unc
Solicitations
Solicitation Description Qty UOM Close Date
SPE5E216T3043 Screw, Cap, Socket He 10 EA 12/17/2015
SPE5E319T208B Screw, Cap, Socket He 6 EA 05/28/2019
SPE5E320T6560 Screw, Cap, Socket He 14 EA 03/25/2020
SPE5E320T7181 Screw, Cap, Socket He 6 EA 04/13/2020
SPE5E320T7716 Screw, Cap, Socket He 10 EA 04/28/2020
SPE5E320T7877 Screw, Cap, Socket He 10 EA 05/05/2020

Pricing and Availability

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27172 Cross Reference
  • 60-27130-17
  • CB27466-015