The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-609-8341, 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 17 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-609-8341 |
| Primary Part Number | 3M1277E6D7A |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.503 INCHES NOMINAL IN |
| Thread Length | 0.563 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.4375 INCHES NOMINAL IN |
| Grip Diameter | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM IN |
| Chamfer Angle | 23.4 DEGREES NOMINAL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | AA |
| Thread Quantity Per Inch | AJ |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.106 INCHES NOMINAL 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 | X |
| Part Number | Manufacturer |
|---|---|
| 3M1277E6D7A | Houston Precision Fasteners I Lp (USA) |
| 11861E6D7A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1277E6D7A | Heartland Precision Fasteners Inc (USA) |
| 3M1277E6D7A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1277E6D7A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1277E6D7A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E6D7A | Camcar Llc Div Camcar Llc (USA) |
| 3M1277E6D7A | Saturn Fasteners Inc (USA) |
| 3M1277E6D7A PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5306-01-609-8341 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-609-8341 has 9 manufacturer part numbers on file: 3M1277E6D7A (Houston Precision Fasteners I Lp), 11861E6D7A (Reid Products Inc. Dba Reid Products Inc), 3M1277E6D7A (Heartland Precision Fasteners Inc), 3M1277E6D7A (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 3M1277E6D7A (Fastener Innovation Technology, Inc. Dba F I T) and 4 more.
Key specifications for 3M1277E6D7A: Fastener Length: 0.503 INCHES NOMINAL IN; Thread Length: 0.563 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.3750 INCHES IN; Head Style: FLAT COUNTERSUNK. 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.