The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-304-7960, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-304-7960 |
| Primary Part Number | 3M1043-5-20-85 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Head Height | 0.247 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Fastener Length | 1.786 INCHES MINIMUM AND 1.816 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Internal Thread Length | 0.300 INCHES MINIMUM AND 0.345 INCHES MAXIMUM CONCENTRIC HOLE IN |
| Thread Series | UNJC CONCENTRIC HOLE |
| Internal Thread Direction | RIGHT-HAND CONCENTRIC HOLE |
| Thread Length | 0.526 INCHES MINIMUM AND 0.576 INCHES MAXIMUM IN |
| Threads Per Inch | 32 CONCENTRIC HOLE |
| Style Designator | CONCENTRIC HOLE THREADED |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES CONCENTRIC HOLE IN |
| Head Minor Diameter | 0.360 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Internal Thread Class | 3B CONCENTRIC HOLE |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 3M1043-5-20-85 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11841-5-20-85 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1043-5-20-85 | Hi-Shear Corporation (USA) |
| 3M1043-5-20-85 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1043-5-20-85 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1043-5-20-85 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1043-5-20-85 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M1043-5-20-85 | 5/2 Secondary reference U.S. Government activity |
| 3M1043-5-20-85 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-304-7960 is a Bolt,internally Relieved Body, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-304-7960 has 7 manufacturer part numbers on file: 3M1043-5-20-85 (Sps Technologies, Llc Dba PB Fasteners), 11841-5-20-85 (Reid Products Inc. Dba Reid Products Inc), 3M1043-5-20-85 (Hi-Shear Corporation), 3M1043-5-20-85 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 3M1043-5-20-85 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
Key specifications for 3M1043-5-20-85: Extended Washer Thickness: 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Head Height: 0.247 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN; Fastener Length: 1.786 INCHES MINIMUM AND 1.816 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 23 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.