Model: A51G20538-11

Internally Relieved Body Bolt
Description:

3a thread class, right-hand , 0.339 inches thread length, 3.324 inches fastener length, round w/wrench flats chamfered head style.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.339 inches
Fastener Length
Between 3.324 inches and 3.329 inches
Head Style
Round w/wrench flats chamfered
Head Diameter
0.875 inches
Head Height
0.125 inches
Width Between Flats
0.688 inches
Shoulder Diameter
Between 0.4965 inches and 0.4985 inches
Shoulder Length
Between 2.985 inches and 2.990 inches
Shank Unthreaded Hole Diameter
0.075 inches first hole and 0.080 inches first hole
Concentric Hole Depth
2.860 inches
Concentric Hole Diameter
Between 0.339 inches and 0.349 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Hardness Rating
46.0 rockwell c and 49.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
3.184 inches first hole and 3.189 inches first hole
Material
Steel
Material Specification
G-1010 mfr ref single material response
Surface Treatment
Chromium
Surface Treatment Specification
Qq-c-320 federal specification single treatment response
Style Designator
Concentric hole unthreaded
Thread Series Designator
Unjf
NSN
5306-00-009-7616
Part Number
A51G20538-11
Description
Bolt,internally Relieved Body
CAGE
61174

An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.

Part A51G20538-11 NSN 5306-00-009-7616

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06676
FIIG:
A003B0
Concept No.:
App. Key:
BN
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:
0.1000lbs
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:
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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