The Bolt,u, cataloged under National Stock Number 5306-01-277-6217, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Gichner Systems Group, Inc. Div C5isr Division. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-277-6217 |
| Primary Part Number | 4900051-1 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Gichner Systems Group, Inc. Div C5isr Division |
| Status | ACTIVE |
| Inside Distance Between Shanks | 7.250 INCHES NOMINAL IN |
| Thread Length | 2.500 INCHES NOMINAL IN |
| Distance From Inside Center of Bend to Bolt End | 7.750 INCHES NOMINAL IN |
| Style Designator | ROUND BEND |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 1018 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 4900051-1 PRIMARY | Gichner Systems Group, Inc. Div C5isr Division (USA) |
| Reference | Meaning |
|---|---|
| 4900051-1 | 3/9 Design control — primary reference Gichner Systems Group Inc Gichner Mobilizer Div |
NSN 5306-01-277-6217 is a Bolt,u, manufactured by Gichner Systems Group, Inc. Div C5isr Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-277-6217 has 1 manufacturer part number on file: 4900051-1 (Gichner Systems Group, Inc. Div C5isr Division).
Key specifications for 4900051-1: Inside Distance Between Shanks: 7.250 INCHES NOMINAL IN; Thread Length: 2.500 INCHES NOMINAL IN; Distance From Inside Center of Bend to Bolt End: 7.750 INCHES NOMINAL IN; Style Designator: ROUND BEND. 10 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.