Model: 91253A554

Socket Head Cap Screw

Special Features:

Actual matl is alloy steel with a black oxide finish

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.750 inches and 1.250 inches
Fastener Length
2.250 inches
Head Style
Flat countersunk
Head Diameter
Between 0.480 inches and 0.531 inches
Internal Drive Style
Hexagon
End Application
4910-01-539-6129
Thread Diameter
0.250 inches
Width Across Flats
0.156 inches
Thready Qty Per Inch (tpi)
20
Countersink Angle
Between 80.0 degrees and 84.0 degrees
Part Name Assigned By Controlling Agency
Screw, cap, socket head, flat
Color
Black
Material
Steel
Surface Treatment
Oxide
Thread Series Designator
Unc
NSN
5305-01-628-2773
Part Number
91253A554
Description
Screw,cap,socket Head
CAGE
3A054

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 91253A554 NSN 5305-01-628-2773

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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