Model: 74D291033-2025

Externally Relieved Body Bolt

Special Features:

Countersunk hole at the end of threads, 0.095 in. Min, 0.155 in. Max dia; groove, 0.580 in. Lg from end, 1.030 in. Min, 1.040 in. Max dia

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.720 inches
Fastener Length
3.900 inches
Head Style
Pan
Head Diameter
1.000 inches
Head Height
0.470 inches
Hole Diameter
0.270 inches
Shank Unthreaded Hole Diameter
0.250 inches first hole and 0.256 inches first hole
First Diameter From Head
0.470 inches
Second Diameter From Head
Between 1.015 inches and 1.025 inches
Third Diameter From Head
Between 1.045 inches and 1.055 inches
Fourth Diameter From Head
Between 1.020 inches and 1.030 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.400 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
0.980 inches
Distance From Largest Bearing Surface Of Head To End Of Third Diameter
1.455 inches
Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter
1.580 inches
Thread Diameter
1.125 inches
Hole Quantity
1
Hole Type
Drilled
Thready Qty Per Inch (tpi)
20
Hole Configuration Style
Round longitudinal hole
Distance From Head Largest Bearing Surface To Shank Hole Center
1.200 inches first hole
Externally Relieved Body Diameter Quantity
4
Material
Steel comp xm-13
Material Specification
Ams 5629 assn standard single material response
Thread Series Designator
Un
NSN
5306-01-303-3902
Part Number
74D291033-2025
Description
Bolt,externally Relieved Body
CAGE
76301

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Part 74D291033-2025 NSN 5306-01-303-3902

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06675
FIIG:
A003B0
Concept No.:
App. Key:
BF
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.9000lbs
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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