Model: 326518-1

Externally Relieved Body Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.188 inches
Fastener Length
Between 0.658 inches and 0.750 inches
Head Style
Flat chamfer
Head Diameter
Between 0.218 inches and 0.226 inches
Head Height
Between 0.134 inches and 0.138 inches
First Diameter From Head
0.102 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.470 inches and 0.562 inches
Internal Drive Style
Cross recess type ii
Thread Diameter
0.138 inches
Width Across Flats
Between 0.109 inches and 0.111 inches
Thready Qty Per Inch (tpi)
32
Externally Relieved Body Diameter Quantity
1
Material
Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
Material Specification
66 federal standard all material responses
Surface Treatment
Passivate head
Surface Treatment
Passivate threads
Surface Treatment Specification
Qq-p-35 federal specification single treatment response head
Surface Treatment Specification
Qq-p-35 federal specification single treatment response threads
Supplementary Features
Altered item nsn5305-00-068-5415 rn 96906 ms16995-20
Thread Series Designator
Unc
NSN
5305-01-101-5577
Part Number
326518-1
Description
Screw,externally Relieved Body
CAGE
96214

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 326518-1 NSN 5305-01-101-5577

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:
U
ESD:
ESD:
MMAC:
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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