51B220-4

View detailed technical data, stock status, and sourcing information for: 51B220-4
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part 51B220-4 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-767-3272

Item Name Code

29294

Assigment Date

10/07/1972 (53 years ago)

right-hand thread direction, 0.511 inches minimum and 0.558 inches maximum fastener length, 3a thread class, pan head style, 0.276 inches minimum thread 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: 0.276 inches minimum
Fastener Length: 0.511 inches minimum and 0.558 inches maximum
Head Style: pan
Head Diameter: 0.328 inches nominal
Head Height: 0.088 inches minimum and 0.102 inches maximum
Grip Diameter: 0.1620 inches minimum and 0.1630 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.164 inches
Grip Length: 0.235 inches minimum and 0.265 inches maximum
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 180000 pounds per square inch
Material: steel comp 4340 or steel comp 4140 or steel comp 8740 or steel comp e4340 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Thread Series Designator: unjc

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
51B220-4	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-767-3272?

The FSCG of the NSN 5305-00-767-3272 is 5305

Does the NSN 5305-00-767-3272 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-767-3272 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 5305-00-767-3272 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-767-3272 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 5305-00-767-3272 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Sat, Oct 7, 1972