The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-595-4563, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-595-4563 |
| Primary Part Number | ST3M571-3-11 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| 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 |
|---|---|
| ST3M571-3-11 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M571-3-11 | Heartland Precision Fasteners Inc (USA) |
| ST3M571-3-11 | Howmet Global Fastening Systems Inc (USA) |
| ST3M571-3-11 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-3-11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-3-11 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M571-3-11 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M751 | The Boeing Company Div Defense (USA) |
| ST3M571-3-11 | Huck International, Inc (USA) |
| ST3M571-3-11 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M571-3-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| AIC752-3-11 | 5/1 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| MB84-3-11 | 5/1 Secondary reference Hi-Shear Corporation |
| BM3326-3-11 | 5/1 Secondary reference Huck International, Inc |
| ST3M-3-11 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| VAL23033-3-11 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 74328-3-11 | 5/9 Secondary reference U.S. Government activity |
| S11-1059-3-11 | 5/1 Secondary reference Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries |
| GS1030-3-11 | 5/9 Secondary reference B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
| VS3060-3-11 | 5/1 Secondary reference Howmet Global Fastening Systems Inc |
| 74328-3-11 | 5/1 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-595-4563 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-595-4563 has 11 manufacturer part numbers on file: ST3M571-3-11 (The Boeing Company Div Defense), ST3M571-3-11 (Heartland Precision Fasteners Inc), ST3M571-3-11 (Howmet Global Fastening Systems Inc), ST3M571-3-11 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M571-3-11 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 6 more.
Key specifications for ST3M571-3-11: End Item Identification: BOLT,CLOSE TOLERANCE. 0 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.