The Bolt,shear, cataloged under National Stock Number 5306-01-186-3172, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-186-3172 |
| Primary Part Number | GB511EC4D11 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.422 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN |
| Fastener Length | 1.080 INCHES MINIMUM AND 1.096 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837 TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.382 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES NOMINAL IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 79895D-4-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GB511EC4D11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GB511EC | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 79895D-4-11 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-186-3172 is a Bolt,shear, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-186-3172 has 3 manufacturer part numbers on file: 79895D-4-11 (Sps Technologies, Llc Dba PB Fasteners), GB511EC4D11 (Northrop Grumman Systems Corporation), GB511EC (Northrop Grumman Systems Corporation).
Key specifications for GB511EC4D11: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.422 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN; Fastener Length: 1.080 INCHES MINIMUM AND 1.096 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-8837 TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.