Model: 17G111031-27

Externally Relieved Body Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.730 inches
Fastener Length
2.140 inches
Head Style
Flat chamfer
Head Diameter
Between 0.550 inches and 0.562 inches
Head Height
Between 0.368 inches and 0.375 inches
First Diameter From Head
Between 0.3678 inches and 0.3750 inches
Second Diameter From Head
0.280 inches
Third Diameter From Head
Between 0.2581 inches and 0.2591 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
1.015 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
1.195 inches
Distance From Largest Bearing Surface Of Head To End Of Third Diameter
1.297 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
0.312 inches
Thready Qty Per Inch (tpi)
28
Externally Relieved Body Diameter Quantity
3
Material
Iron alloy 660
Material Specification
Ams 5731 assn standard single material response or ams 5737 assn standard single material response
Surface Treatment
Oxide
Surface Treatment Specification
Mil-c-13924, class 1 military specification single treatment response
Thread Series Designator
Unf
NSN
5305-01-447-8656
Part Number
17G111031-27
Description
Screw,externally Relieved Body
CAGE
88277

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 undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Part 17G111031-27 NSN 5305-01-447-8656

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01852
FIIG:
A003B0
Concept No.:
App. Key:
SE
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:
BA
CRITL:
X

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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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