The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-588-3171, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-588-3171 |
| Primary Part Number | 766374-1 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing |
| Status | ACTIVE |
| Head Height | 0.062 INCHES NOMINAL IN |
| Fastener Length | 1.358 INCHES NOMINAL IN |
| Thread Length | 1.238 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST HOLE IN |
| First Diameter From Head | 0.241 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Head Style | FLAT CHAMFER |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.120 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.698 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.750 INCHES NOMINAL 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 |
|---|---|
| 766374-1 | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 766374-1 | 3/2 Design control — primary reference U.S. Government activity |
| ASP2 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5306-00-588-3171 is a Bolt,externally Relieved Body, manufactured by Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-588-3171 has 1 manufacturer part number on file: 766374-1 (Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing).
3 possible matches (shared part number, not a government interchangeability claim): 4710-01-050-2816, 2990-01-069-2054, 6930-01-634-0305. Verify interchangeability with system specifications before substitution.
Key specifications for 766374-1: Head Height: 0.062 INCHES NOMINAL IN; Fastener Length: 1.358 INCHES NOMINAL IN; Thread Length: 1.238 INCHES MINIMUM IN; Shank Unthreaded Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST HOLE IN. 10 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.