The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-536-4431, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. The record lists 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 — Bolts (FSG 53) |
| Manufacturers | Howmet Global Fastening Systems Inc (CAGE 06950); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Fastener Innovation Technology, Inc. Dba F I T (CAGE 58998); Valley-Todeco, Inc. Dba Arconic Fastening Systems (CAGE 06710) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-536-4431 |
| Primary Part Number | 3M1277E3D8A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| TX1027E3D8XA | Howmet Global Fastening Systems Inc (USA) |
| TX1027E3D8XA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027E3D8XA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E3D8A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1277E3D8A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027E3D8XA | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1277E3D8A | Camcar Llc Div Camcar Llc (USA) |
| 3M1277E3D8A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1027E3D8XA | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1027E3D8XA | Hi-Shear Corporation (USA) |
| 11861E3D8A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1277E3D8A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 3M1277E3D8A PRIMARY | Saturn Fasteners Inc (USA) |
| 3M1277E3D8A | Houston Precision Fasteners I Lp (USA) |
| 3M1277E3D8A PRIMARY | The Boeing Company Div Defense (USA) |
| WC1277E3D8A | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TX1027E3D8XA | 5/2 Secondary reference U.S. Government activity |
| TX1027E3D8XA | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-536-4431 is a Bolt,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-536-4431 has 16 manufacturer part numbers on file: TX1027E3D8XA (Howmet Global Fastening Systems Inc), TX1027E3D8XA (Sps Technologies, Llc Dba PB Fasteners), TX1027E3D8XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1277E3D8A (Fastener Innovation Technology, Inc. Dba F I T), 3M1277E3D8A (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 11 more.
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.