The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-101-8143, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-101-8143 |
| Primary Part Number | STD.2182-D-55 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Head Height | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Fastener Length | 0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | STD2167 FSCM 56387 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN |
| Material Document and Classification | NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.550 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN |
| Width Between Flats | 0.339 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Grip Diameter | 0.1895 INCHES MINIMUM AND 0.1904 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| STD.2182-D-55 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5306-01-101-8143 is a Bolt,close Tolerance, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-101-8143 has 1 manufacturer part number on file: STD.2182-D-55 (Naval Inventory Control Point Mechanicsburg).
Key specifications for STD.2182-D-55: Head Height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN; Fastener Length: 0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM IN; Surface Treatment Document and Classification: STD2167 FSCM 56387 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.