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ASH-0-402 1/2

View detailed technical data, stock status, and sourcing information for: ASH-0-402 1/2

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ASH-0-402 1/2
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-639-3377
Item Name Code
16282
Assigment Date
01/01/1963 (63 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

right-hand thread direction, 0.156 inches nominal thread length, 3a thread class, flat chamfer head style, 0.156 inches nominal fastener length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a
Thread Direction
right-hand
Thread Length
0.156 inches nominal
Fastener Length
0.156 inches nominal
Head Style
flat chamfer
Head Diameter
0.178 inches minimum and 0.183 inches maximum
Head Height
0.109 inches minimum and 0.112 inches maximum
Hole Diameter
0.037 inches nominal
Internal Drive Style
hexagon
Nominal Thread Diameter
0.112 inches
Width Across Flats
0.079 inches nominal
Hole Quantity
4
Hole Type
drilled
Thread Quantity Per Inch
48
Hole Configuration Style
round
Material
copper alloy 377 overall
Material Document And Classification
qq-b-611a,cond 1/2 hard fed spec single material response overall
Thread Series Designator
unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-512-3518 No Name Available 01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
290-402 1/2SS Socket Head Cap Screw
ASH-0-402 1/2 Socket Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-00-639-3377?
The FSCG of the NSN 5305-00-639-3377 is 5305
Does the NSN 5305-00-639-3377 have a Schedule B code assigned?
Yes, the Schedule B code is 7415338550
Does NSN 5305-00-639-3377 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-00-639-3377 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-639-3377 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-00-639-3377 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

Professional Distribution

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