Model: A51B25564-13

Shoulder Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.070 inches
Fastener Length
2.060 inches
Head Style
Bevel-conical
Head Diameter
1.045 inches
Head Height
0.625 inches
Shoulder Diameter
0.6150 inches first shoulder and 0.6156 inches first shoulder
Shoulder Length
0.985 inches first shoulder and 0.995 inches first shoulder
Internal Drive Style
Hexagon
Thread Diameter
0.500 inches
Width Across Flats
0.500 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
39.0 rockwell c and 42.0 rockwell c
Shoulder Shape
Round first shoulder
Material
Steel comp 4340
Material Specification
Mil-s-8844, class 1 military specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Mil-c-8837 ty2 cl 1 military specification single treatment response
Thread Series Designator
Unjf
NSN
5305-01-009-3973
Part Number
A51B25564-13
Description
Screw,shoulder
CAGE
26512

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

Part A51B25564-13 NSN 5305-01-009-3973

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
Concept No.:
App. Key:
SL
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

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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