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5305-01-337-3258

Find complete technical information, availability, and procurement data for: 5305-01-337-3258

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5305-01-337-3258
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-337-3258
Item Name Code
18257
Assigment Date
04/12/1991 (35 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

2a thread class, 1.000 inches minimum and 1.188 inches maximum thread length, right-hand thread direction, 1.938 inches minimum and 2.000 inches maximum fastener length, hexagon head style

Product Characteristics

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

Thread Class
2a
Thread Direction
right-hand
Thread Length
1.000 inches minimum and 1.188 inches maximum
Fastener Length
1.938 inches minimum and 2.000 inches maximum
Head Style
hexagon
Head Height
0.226 inches minimum and 0.243 inches maximum
Width Between Flats
0.551 inches minimum and 0.562 inches maximum
Shank Unthreaded Hole Diameter
0.105 inches minimum and 0.113 inches maximum first hole
Nominal Thread Diameter
0.375 inches
Features Provided
finished head
Thread Quantity Per Inch
16
Minimum Tensile Strength
150000 pounds per square inch
Hardness Rating
32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center
1.772 inches minimum and 1.854 inches maximum first hole
Material
steel overall
Material Document And Classification
sae gr 8 assn std single material response overall
Surface Treatment
phosphate overall
Surface Treatment Document And Classification
d0d-p-16232 ty z cl 2 mil spec single treatment response overall
Thread Series Designator
unc
Nondefinitive Spec/Std Data
2 type and 10p style and 8 grade

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
F05435 ITEM 47 Hexagon Head Cap Screw
MS51107-64 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-337-3258?
The FSCG of the NSN 5305-01-337-3258 is 5305
Does the NSN 5305-01-337-3258 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-337-3258 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 5305-01-337-3258 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-337-3258 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 5305-01-337-3258 was assigned to the Federal Catalog?
It was assigned 35 years ago, on Fri, Apr 12, 1991

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