The Bolt,machine, cataloged under National Stock Number 5306-01-098-5261, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Orlotronics Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-098-5261 |
| Primary Part Number | 410539-1 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Orlotronics Corp |
| Status | ACTIVE |
| Head Height | 0.570 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN |
| Fastener Length | 7.570 INCHES MINIMUM AND 7.930 INCHES MAXIMUM IN |
| Thread Length | 6.070 INCHES MINIMUM AND 6.430 INCHES MAXIMUM IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5626,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.212 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 410539-1 PRIMARY | Orlotronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 410539-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-098-5261 is a Bolt,machine, manufactured by Orlotronics Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-098-5261 has 1 manufacturer part number on file: 410539-1 (Orlotronics Corp).
1 possible match (shared part number, not a government interchangeability claim): 5915-01-114-4457. Verify interchangeability with system specifications before substitution.
Key specifications for 410539-1: Head Height: 0.570 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN; Fastener Length: 7.570 INCHES MINIMUM AND 7.930 INCHES MAXIMUM IN; Thread Length: 6.070 INCHES MINIMUM AND 6.430 INCHES MAXIMUM IN; Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL. 13 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.