The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-599-4554, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-599-4554 |
| Primary Part Number | 3M1277E5D6A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Fastener Length | 0.844 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-L-87132, TYPE 1, GRADE B MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.375 INCHES NOMINAL IN |
| Grip Diameter | 0.3271 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 90.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.076 INCHES NOMINAL IN |
| Head Diameter | 0.4645 INCHES MINIMUM AND 0.4739 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 3M1277E5D6A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E5D6A PRIMARY | Hi-Shear Corporation (USA) |
| 3M1277E5D6A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M1277E5D6A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1277E5D6A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1277E5D6A PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M1277E5D6A | 3/2 Design control — primary reference U.S. Government activity |
| 3M1277E5D6A | 5/9 Secondary reference B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
NSN 5306-01-599-4554 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-599-4554 has 6 manufacturer part numbers on file: 3M1277E5D6A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1277E5D6A (Hi-Shear Corporation), 3M1277E5D6A (Howmet Global Fastening Systems Inc), 3M1277E5D6A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M1277E5D6A (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
Key specifications for 3M1277E5D6A: Fastener Length: 0.844 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-L-87132, TYPE 1, GRADE B MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.469 INCHES NOMINAL IN; Hole Configuration Style: ROUND. 20 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.