The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-208-0665, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-208-0665 |
| Primary Part Number | 6-35161-1 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 3.080 INCHES NOMINAL IN |
| Thread Length | 0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.166 INCHES MAXIMUM FIRST HOLE IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.125 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.615 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.560 INCHES NOMINAL IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.900 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| 6-35161-1 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6-35161-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5306-00-208-0665 is a Bolt,internally Relieved Body, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-208-0665 has 1 manufacturer part number on file: 6-35161-1 (Huck International, Inc).
Key specifications for 6-35161-1: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 3.080 INCHES NOMINAL IN; Thread Length: 0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.141 INCHES MINIMUM AND 0.166 INCHES MAXIMUM FIRST HOLE IN. 17 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.