The Bolt,square Neck, cataloged under National Stock Number 5306-01-161-5499, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-161-5499 |
| Primary Part Number | 5V770 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Fastener Length | 18.80 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | 1E2493 FSC-11083 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 12.70 MILLIMETERS NOMINAL MM |
| Material Document and Classification | STD STEEL FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PAINT OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 5V770 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5306-01-161-5499 is a Bolt,square Neck, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-161-5499 has 1 manufacturer part number on file: 5V770 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 5V770: Fastener Length: 18.80 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: 1E2493 FSC-11083 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 12.70 MILLIMETERS NOMINAL MM; Material Document and Classification: STD STEEL FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 12 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.