The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-278-1994, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Saturn Fasteners Inc. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-278-1994 |
| Primary Part Number | SF118S16D33 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Saturn Fasteners Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.539 INCHES NOMINAL IN |
| Fastener Length | 2.897 INCHES MINIMUM AND 2.927 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | S672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.825 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM IN |
| Head Minor Diameter | 1.715 INCHES NOMINAL IN |
| Grip Diameter | 0.9980 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 132000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.647 INCHES MINIMUM AND 2.677 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| VS3133S16D33 | Tactair Fluid Controls Inc (USA) |
| SF118S16D33 PRIMARY | Saturn Fasteners Inc (USA) |
| PBF7521S16D33 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0009S16D-33 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| H411S16D-33 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3133S16D33 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| C7521S16D33 | 7/2 Vendor item drawing reference U.S. Government activity |
| 120978S16-D33 | 5/9 Secondary reference U.S. Government activity |
| AIC596S16D33 | 3/9 Design control — primary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| VS3133S16D33 | 5/9 Secondary reference U.S. Government activity |
| H411S16D-33 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-278-1994 is a Bolt,close Tolerance, manufactured by Saturn Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-278-1994 has 5 manufacturer part numbers on file: VS3133S16D33 (Tactair Fluid Controls Inc), SF118S16D33 (Saturn Fasteners Inc), PBF7521S16D33 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCG0009S16D-33 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), H411S16D-33 (Huck International, Inc).
Key specifications for SF118S16D33: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.539 INCHES NOMINAL IN. 22 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.