The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-140-7990, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-140-7990 |
| Primary Part Number | SS5011-12-81H |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Head Height | 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Fastener Length | 5.619 INCHES MINIMUM AND 5.649 INCHES MAXIMUM IN |
| Thread Length | 0.597 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM ALL HOLES IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 5.052 INCHES MINIMUM AND 5.072 INCHES MAXIMUM IN |
| Width Between Flats | 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN |
| Grip Diameter | 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 28000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.481 INCHES MINIMUM AND 0.531 INCHES MAXIMUM ALL HOLES 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 |
|---|---|
| SS5011-12-81H PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| SS5011-12-81H PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| SS5011-12-81H PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SS5011-12-81H | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SS5011-12-81H PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SS5011-12-81H PRIMARY | Acufast Aircraft Products (USA) |
| Reference | Meaning |
|---|---|
| SS5011-12-81H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-140-7990 is a Bolt,close Tolerance, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-140-7990 has 6 manufacturer part numbers on file: SS5011-12-81H (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), SS5011-12-81H (M.s. Aerospace Inc. Dba Ms Aerospace Inc), SS5011-12-81H (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SS5011-12-81H (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SS5011-12-81H (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
Key specifications for SS5011-12-81H: Head Height: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Fastener Length: 5.619 INCHES MINIMUM AND 5.649 INCHES MAXIMUM IN; Thread Length: 0.597 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM ALL HOLES IN. 17 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.