The Bolt,square Neck, cataloged under National Stock Number 5306-00-616-2592, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Komatsu America Corp.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-616-2592 |
| Primary Part Number | 296879R1 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Neck Length | 0.563 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Fastener Length | 5.000 INCHES NOMINAL IN |
| Thread Length | 2.000 INCHES MINIMUM IN |
| Hardness Rating | 22.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.875 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 81.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 9 |
| Material | STEEL COMP 1035 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.406 INCHES MINIMUM AND 1.512 INCHES MAXIMUM 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 |
|---|---|
| 296879R1 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 296879R1 | 3/9 Design control — primary reference Komatsu American Intl Co |
| 296879R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 296879R1 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-616-2592 is a Bolt,square Neck, manufactured by Komatsu America Corp., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-616-2592 has 1 manufacturer part number on file: 296879R1 (Komatsu America Corp.).
Key specifications for 296879R1: Neck Length: 0.563 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN; Fastener Length: 5.000 INCHES NOMINAL IN; Thread Length: 2.000 INCHES MINIMUM IN; Hardness Rating: 22.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. 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.