The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-188-1653, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-188-1653 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Width Across Flats | 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Head Height | 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN |
| Fastener Length | 13.840 INCHES MINIMUM AND 13.900 INCHES MAXIMUM IN |
| Thread Length | 2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZY |
| First Diameter From Head | 1.663 INCHES MINIMUM AND 1.666 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 1.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 11.120 INCHES NOMINAL IN |
| Nonstandard Thread Pitch Diameter | +1.7327 TO 1.7402 INCHES IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CHROMIUM OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 8 |
| Material | STEEL OVERALL |
| Thread Series Designator | ACME |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Head Diameter | 2.480 INCHES MINIMUM AND 2.493 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 | C |
| Reference | Meaning |
|---|---|
| 247E207-14 (SH 3-REV S) | 3/1 Design control — primary reference Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory |
NSN 5306-01-188-1653 is a Bolt,internal Wrenching, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-188-1653: Width Across Flats: 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Head Height: 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN; Fastener Length: 13.840 INCHES MINIMUM AND 13.900 INCHES MAXIMUM IN; Thread Length: 2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN. 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.