MB88-4-28

View detailed technical data, stock status, and sourcing information for: MB88-4-28
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-482-0040

Item Name Code

04905

Assigment Date

02/05/2001 (25 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

3a thread class, 2.147 inches nominal fastener length, double hexagon head style, right-hand thread direction, 0.397 inches nominal 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: 0.397 inches nominal
Fastener Length: 2.147 inches nominal
Head Style: double hexagon
Head Height: 0.154 inches minimum and 0.174 inches maximum
Width Between Flats: 0.439 inches maximum
Shoulder Diameter: 0.2646 inches minimum and 0.2651 inches maximum first shoulder
Shoulder Length: 1.802 inches minimum and 1.822 inches maximum first shoulder
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Shoulder Shape: round first shoulder
Special Features: 0.0158 oversize
Material: steel comp xm-13 overall
Material Document And Classification: ams 5629 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unjf

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
109450-4-28	Shoulder Bolt
BM17019-4-28X	Shoulder Bolt
HP5497-4-28	Shoulder Bolt
MB88-4-28	Shoulder Bolt
PBF1254-4-28	Shoulder Bolt
S11-1061-4-28	Shoulder Bolt
ST3M497-4-28	Shoulder Bolt
VAL23607-4-28	Shoulder Bolt
VS3037-4-28	Shoulder Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-482-0040?

The FSCG of the NSN 5306-01-482-0040 is 5306

Does the NSN 5306-01-482-0040 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-482-0040 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 5306-01-482-0040 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-482-0040 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 5306-01-482-0040 was assigned to the Federal Catalog?

It was assigned 25 years ago, on Mon, Feb 5, 2001