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5305-01-020-5921

Find complete technical information, availability, and procurement data for: 5305-01-020-5921

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5305-01-020-5921
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-020-5921
Item Name Code
06657
Assigment Date
05/01/1976 (50 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.

0.245 inches minimum and 0.312 inches maximum thread length, 2a thread class, 0.281 inches minimum and 0.312 inches maximum fastener length, fillister head style, 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
0.245 inches minimum and 0.312 inches maximum
Fastener Length
0.281 inches minimum and 0.312 inches maximum
Head Style
fillister
Head Diameter
0.124 inches minimum and 0.140 inches maximum
Head Height
0.055 inches minimum and 0.062 inches maximum
Hole Diameter
0.031 inches nominal
Internal Drive Style
slot
Nominal Thread Diameter
0.086 inches
Hole Quantity
1
Thread Quantity Per Inch
56
Minimum Tensile Strength
80000 pounds per square inch
Screw Material
steel corrosion resisting
Screw Material Document And Classification
ams 5616 fed spec single material response
Screw Surface Treatment
oxide
Screw Surface Treatment Document And Classification
mil-c-13924,cl 4 mil spec single treatment response
Head Hole Configuration Style
hexagon flats
Thread Series Designator
unc
Nondefinitive Spec/Std Data
1 type and 5s style
Departure From Cited Document
as modified by surface treatment

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
120354-004 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-020-5921?
The FSCG of the NSN 5305-01-020-5921 is 5305
Does the NSN 5305-01-020-5921 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-020-5921 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 5305-01-020-5921 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-020-5921 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 5305-01-020-5921 was assigned to the Federal Catalog?
It was assigned 50 years ago, on Sat, May 1, 1976

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