Model: A51B27581-13

Shoulder Bolt

Special Features:

Min thickness of silver plate to be 0.0002 on threaded area

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.640 inches
Fastener Length
3.096 inches
Head Style
Round w/wrench flats
Head Diameter
1.750 inches
Head Height
0.250 inches
Width Between Flats
1.500 inches
Shoulder Diameter
1.2465 inches first shoulder and 1.2470 inches first shoulder
Shoulder Length
2.456 inches first shoulder
Shank Unthreaded Hole Diameter
0.141 inches first hole
Thread Diameter
0.875 inches
Thready Qty Per Inch (tpi)
14
Hardness Rating
46.0 rockwell c and 49.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
2.956 inches first hole
Shoulder Shape
Round first shoulder
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Material Specification
Mil-s-8949 military specification single material response
Precious Material
Silver
Surface Treatment
Silver
Surface Treatment Specification
Ams 2410 assn standard single treatment response
Test Data Document
81349-mil-i-6868 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unjf
NSN
5306-00-972-3963
Part Number
A51B27581-13
Description
Bolt,shoulder
CAGE
61174

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (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 not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. For items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. Excludes thumbscrew.

Part A51B27581-13 NSN 5306-00-972-3963

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04905
FIIG:
A003B0
Concept No.:
App. Key:
BY
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:
S
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
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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