The Bolt,eye, cataloged under National Stock Number 5306-01-313-5991, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-313-5991 |
| Primary Part Number | 3M977C3-3-4 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Thread Length | 0.330 INCHES NOMINAL IN |
| Shank Length | 0.580 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED |
| Material Document and Classification | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 1.040 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Eye Inside Diameter | 0.196 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Eye Stock Thickness | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Eye Outside Width | 0.440 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 |
|---|---|
| 3M977C3-3-4 | Unirex, Inc. (USA) |
| 3M977C3-3-4 | Associated Aircraft Supply Co. Llc Dba Associated Aircraft Supply Co Llc (USA) |
| 3M977C3-3-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M977C3-3-4 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
NSN 5306-01-313-5991 is a Bolt,eye, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-313-5991 has 3 manufacturer part numbers on file: 3M977C3-3-4 (Unirex, Inc.), 3M977C3-3-4 (Associated Aircraft Supply Co. Llc Dba Associated Aircraft Supply Co Llc), 3M977C3-3-4 (The Boeing Company Div Defense).
Key specifications for 3M977C3-3-4: Thread Length: 0.330 INCHES NOMINAL IN; Shank Length: 0.580 INCHES NOMINAL IN; Style Designator: ROUND, CLOSED; Material Document and Classification: QQ-S-763 FED SPEC ALL MATERIAL RESPONSES 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.