The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-054-1606, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bsi Standards Limited. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-054-1606 |
| Primary Part Number | A109-6E |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bsi Standards Limited |
| Status | ACTIVE |
| Head Height | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN |
| Thread Length | 0.299 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN |
| Material Document and Classification | BMS S.96 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.671 INCHES MINIMUM AND 0.701 INCHES MAXIMUM IN |
| Width Between Flats | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Grip Diameter | 0.2493 INCHES MINIMUM AND 0.2498 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL 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 |
|---|---|
| A109-6E | Bsi Standards Limited (GBR) |
| Reference | Meaning |
|---|---|
| A109-6E | 3/9 Design control — primary reference British Aerospace North America Inc |
NSN 5306-01-054-1606 is a Bolt,close Tolerance, manufactured by Bsi Standards Limited, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-054-1606 has 1 manufacturer part number on file: A109-6E (Bsi Standards Limited).
Key specifications for A109-6E: Head Height: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Fastener Length: 1.000 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN; Thread Length: 0.299 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN; Material Document and Classification: BMS S.96 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.