The Bolt,machine, cataloged under National Stock Number 5306-01-311-4064, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Long-Lok, Llc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-311-4064 |
| Primary Part Number | TPL4-5AM |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Long-Lok, Llc |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 0.656 INCHES NOMINAL IN |
| Thread Length | 0.468 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.188 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Locking Feature | PATCH THREADS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL FASTENER |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| TPL4-5AM PRIMARY | Long-Lok, Llc (USA) |
| Reference | Meaning |
|---|---|
| TK204A2L | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-311-4064 is a Bolt,machine, manufactured by Long-Lok, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-311-4064 has 1 manufacturer part number on file: TPL4-5AM (Long-Lok, Llc).
Key specifications for TPL4-5AM: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 0.656 INCHES NOMINAL IN; Thread Length: 0.468 INCHES NOMINAL IN; Criticality Code Justification: FEAT. 16 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.