The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-536-4438, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Heartland Precision Fasteners Inc (CAGE 0ZC92); Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAGE L4528); Fastener Innovation Technology, Inc. Dba F I T (CAGE 58998); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Howmet Global Fastening Systems Inc (CAGE 06950) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-536-4438 |
| Primary Part Number | 3M1277E4D9A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| 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 |
|---|---|
| 3M1277E4D9A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| TX1027E4D9XA | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1277E4D9A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027E4D9XA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027E4D9XA | Howmet Global Fastening Systems Inc (USA) |
| 3M1277E4D9A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E4D9A | Camcar Llc Div Camcar Llc (USA) |
| 3M1277E4D9A | Houston Precision Fasteners I Lp (USA) |
| 11861E4D9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1277E4D9A PRIMARY | Saturn Fasteners Inc (USA) |
| TX1027E4D9XA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1277E4D9A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027E4D9XA | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027E4D9XA | Hi-Shear Corporation (USA) |
| 3M1277E4D9A PRIMARY | The Boeing Company Div Defense (USA) |
| WC1277E4D9A | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TX1027E4D9XA | 5/2 Secondary reference U.S. Government activity |
| TX1027E4D9XA | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-536-4438 is a Bolt,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-536-4438 has 16 manufacturer part numbers on file: 3M1277E4D9A (Heartland Precision Fasteners Inc), TX1027E4D9XA (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M1277E4D9A (Fastener Innovation Technology, Inc. Dba F I T), TX1027E4D9XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1027E4D9XA (Howmet Global Fastening Systems Inc) 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.