The Bolt,machine, cataloged under National Stock Number 5306-01-505-1731, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bek, Inc. Dba Level 1 Fasteners. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-505-1731 |
| Primary Part Number | NAS501-5H10A |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bek, Inc. Dba Level 1 Fasteners |
| Status | ACTIVE |
| Head Height | 0.170 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN |
| Fastener Length | 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Thread Length | 0.532 INCHES NOMINAL IN |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | AMS 5645 ASSN STD 1ST MATERIAL RESPONSE OR ASM 5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| Width Between Flats | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 321 OR STEEL COMP 347 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 INCHES NOMINAL IN |
| 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 |
|---|---|
| NAS501-5H10A | Bek, Inc. Dba Level 1 Fasteners (USA) |
| Reference | Meaning |
|---|---|
| NAS501-5H10A | 3/2 Design control — primary reference U.S. Government activity |
| NAS501-5H-10A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5306-01-505-1731 is a Bolt,machine, manufactured by Bek, Inc. Dba Level 1 Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-505-1731 has 1 manufacturer part number on file: NAS501-5H10A (Bek, Inc. Dba Level 1 Fasteners).
Key specifications for NAS501-5H10A: Head Height: 0.170 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN; Fastener Length: 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Thread Length: 0.532 INCHES NOMINAL IN; Hole Configuration Style: HEXAGON FLATS. 18 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.