The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-541-5269, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-541-5269 |
| Primary Part Number | 3M1277E3D12A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.042 INCHES NOMINAL IN |
| Fastener Length | 1.095 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-L-87132, TYPE 1, GRADE B, W/CETYL ALCOHOL MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.750 INCHES NOMINAL IN |
| Grip Diameter | 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.293 INCHES MINIMUM AND 0.302 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 |
|---|---|
| 11861E3D12A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1277E3D12A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| TX1027E3D12XA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E3D12A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027E3D12XA | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1277E3D12A PRIMARY | Saturn Fasteners Inc (USA) |
| TX1027E3D12XA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027E3D12XA PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1277E3D12A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E3D12A PRIMARY | The Boeing Company Div Defense (USA) |
| WC1277E3D12A | West Coast Aerospace, Inc. (USA) |
| 3M1277E3D12A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027E3D12XA | Howmet Global Fastening Systems Inc (USA) |
| TX1027E3D12XA PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| TX1027E3D12XA | 5/2 Secondary reference U.S. Government activity |
| 3M1277E3D12A | 5/9 Secondary reference Houston Precision Fasteners I Lp |
| TX1027E3D12XA | 5/9 Secondary reference Sps Technologies Inc |
| 3M1277E3D12A | 5/9 Secondary reference Camcar Llc Div Camcar Llc |
NSN 5306-01-541-5269 is a Bolt,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-541-5269 has 14 manufacturer part numbers on file: 11861E3D12A (Reid Products Inc. Dba Reid Products Inc), 3M1277E3D12A (Heartland Precision Fasteners Inc), TX1027E3D12XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1277E3D12A (Fastener Innovation Technology, Inc. Dba F I T), TX1027E3D12XA (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 9 more.
Key specifications for 3M1277E3D12A: Head Height: 0.042 INCHES NOMINAL IN; Fastener Length: 1.095 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-L-87132, TYPE 1, GRADE B, W/CETYL ALCOHOL MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.345 INCHES NOMINAL IN. 17 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.