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5305-00-543-5057

Find complete technical information, availability, and procurement data for: 5305-00-543-5057

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5305-00-543-5057
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-543-5057
Item Name Code
18257
Assigment Date
01/01/1963 (63 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

0.437 inches nominal fastener length, 0.437 inches nominal thread length, hexagon head style, 2a thread class, right-hand thread direction

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
0.437 inches nominal
Fastener Length
0.437 inches nominal
Head Style
hexagon
Head Height
0.150 inches minimum and 0.163 inches maximum
Width Between Flats
0.428 inches minimum and 0.437 inches maximum
Nominal Thread Diameter
0.250 inches
Thread Quantity Per Inch
20
Hardness Rating
100.0 rockwell b maximum overall
Minimum Yield Strength
69000 pounds per square inch
Special Features
for pac mdcl,include any comp which can be heat treated in accordance with mil-h-6875
Material
steel overall
Material Document And Classification
66 fed std single material response overall
Surface Treatment
cadmium or zinc overall
Thread Series Designator
unc
Nondefinitive Spec/Std Data
2 type and 10p style

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-639-3609 No Name Available 01/01/1963
5305-00-653-7111 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
1755859 Hexagon Head Cap Screw
MS35291-2 Hexagon Head Cap Screw
S4601 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-543-5057?
The FSCG of the NSN 5305-00-543-5057 is 5305
Does the NSN 5305-00-543-5057 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-543-5057 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 5305-00-543-5057 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-543-5057 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 5305-00-543-5057 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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