The Bolt,eye, cataloged under National Stock Number 5306-01-036-7779, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-036-7779 |
| Primary Part Number | S-276 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Shank Diameter | 0.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-Z-325 TY3 CL1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.250 INCHES MINIMUM IN |
| Shank Length | 2.630 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Eye Inside Diameter | 1.500 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Eye Outside Width | 2.650 INCHES MINIMUM AND 2.850 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 |
|---|---|
| PWA57176-1 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| S-276 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
| P4078880 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| PWA51854-1 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5306-01-036-7779 is a Bolt,eye, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-036-7779 has 3 manufacturer part numbers on file: PWA57176-1 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), S-276 (The Crosby Group Llc Dba the Crosby Group), P4078880 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5306-01-057-5964, 5310-01-195-5271. Verify interchangeability with system specifications before substitution.
Key specifications for S-276: Shank Diameter: 0.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325 TY3 CL1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.250 INCHES MINIMUM IN; Shank Length: 2.630 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.