The Bolt,u, cataloged under National Stock Number 5306-01-655-7344, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is O T S I. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-655-7344 |
| Primary Part Number | 72729 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | O T S I |
| Status | ACTIVE |
| Shank Diameter | 0.030 INCHES NOMINAL IN |
| Inside Distance Between Shanks | 2.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | SAE-AMS-QQ-P-416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.375 INCHES NOMINAL IN |
| Distance From Inside Center of Bend to Bolt End | 2.9375 INCHES MINIMUM AND 3.0625 INCHES MAXIMUM IN |
| Style Designator | "V" BEND |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Quantity Per Inch | 16 |
| 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 |
|---|---|
| 72729 PRIMARY | O T S I (USA) |
NSN 5306-01-655-7344 is a Bolt,u, manufactured by O T S I, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-655-7344 has 1 manufacturer part number on file: 72729 (O T S I).
Key specifications for 72729: Shank Diameter: 0.030 INCHES NOMINAL IN; Inside Distance Between Shanks: 2.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: SAE-AMS-QQ-P-416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.375 INCHES NOMINAL IN. 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.