Model: 91251A974

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.437 inches
Fastener Length
0.437 inches
Head Style
Fillister
Head Diameter
0.312 inches
Head Height
0.190 inches
Internal Drive Style
Hexagon
End Application
Rq4a, 4b
Thread Diameter
0.190 inches
Width Across Flats
0.156 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
170000 pounds per square inch
Hardness Rating
37.0 rockwell c
Part Name Assigned By Controlling Agency
Alloy steel socket hd cap screw
Color
Black
Material
Steel
Surface Treatment
Oxide
Thread Series Designator
Unc
NSN
5305-01-641-3974
Part Number
91251A974
Description
Screw,cap,socket Head
CAGE
39428

An externally threaded fastener whose threaded portion is of one nominal 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.

Part 91251A974 NSN 5305-01-641-3974

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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