The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-628-5336, 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 14 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-628-5336 |
| Primary Part Number | 3M1277E6D11A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Saturn Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.075 INCHES NOMINAL IN |
| Fastener Length | 1.264 INCHES MINIMUM AND 1.267 INCHES MAXIMUM IN |
| Thread Length | 0.578 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.6875 INCHES NOMINAL IN |
| Grip Diameter | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM IN |
| Nonstandard Thread Pitch Diameter | +0.3450 TO 0.3479 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN |
| Head Diameter | 0.5504 INCHES MINIMUM AND 0.5604 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 3M1277E6D11A PRIMARY | Saturn Fasteners Inc (USA) |
| TX1027E6D11A PRIMARY | Hi-Shear Corporation (USA) |
| TX1027E6D11A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M1277E6D11A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E6D11A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1277E6D11A PRIMARY | Camcar Llc Div Camcar Llc (USA) |
| TX1027E6D11A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027E6D11A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027E6D11A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E6D11A PRIMARY | Houston Precision Fasteners I Lp (USA) |
| 11861E6D11A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC1277E6D11A PRIMARY | West Coast Aerospace, Inc. (USA) |
| 3M1277E6D11A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 3M1277E6D11A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| TX1027E6D11A | 3/2 Design control — primary reference U.S. Government activity |
| 3M1277E6D11A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5306-01-628-5336 is a Bolt,close Tolerance, manufactured by Saturn Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-628-5336 has 14 manufacturer part numbers on file: 3M1277E6D11A (Saturn Fasteners Inc), TX1027E6D11A (Hi-Shear Corporation), TX1027E6D11A (Howmet Global Fastening Systems Inc), 3M1277E6D11A (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 3M1277E6D11A (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 9 more.
Key specifications for 3M1277E6D11A: Head Height: 0.075 INCHES NOMINAL IN; Fastener Length: 1.264 INCHES MINIMUM AND 1.267 INCHES MAXIMUM IN; Thread Length: 0.578 INCHES NOMINAL IN; Criticality Code Justification: AGAV. 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.