The Rod,threaded End, cataloged under National Stock Number 5306-00-415-5661, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-415-5661 |
| Primary Part Number | 78158-1 |
| Item Name | Rod,threaded End |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Cooper Machinery Services Llc |
| Status | ACTIVE |
| Cotter Pin Hole Diameter | 0.218 INCHES NOMINAL SECOND HOLE IN |
| Cotter Pin Hole Diameter | 0.406 INCHES NOMINAL THIRD HOLE IN |
| Thread Length | 2.062 INCHES MINIMUM NUT THREAD A IN |
| Thread Length | 2.250 INCHES MINIMUM NUT THREAD B IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | SAE4140 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND NUT THREAD A |
| Thread Direction | RIGHT-HAND NUT THREAD B |
| Nominal Thread Size | 1.250 INCHES NUT THREAD A IN |
| Nominal Thread Size | 1.250 INCHES NUT THREAD B IN |
| Thread Class | 3A NUT THREAD B A |
| Thread Class | 3A NUT THREAD A A |
| Thread Quantity Per Inch | 12 NUT THREAD B |
| Thread Quantity Per Inch | 12 NUT THREAD A |
| Material | STEEL COMP 4140 |
| Thread Series Designator | UNF NUT THREAD B |
| Thread Series Designator | UNF NUT THREAD A |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.343 INCHES NOMINAL SECOND HOLE IN |
| Distance From Cotter Pin Hole Centerline to Nut End | 12.812 INCHES NOMINAL THIRD HOLE 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 |
|---|---|
| 78158-1 PRIMARY | Cooper Machinery Services Llc (USA) |
NSN 5306-00-415-5661 is a Rod,threaded End, manufactured by Cooper Machinery Services Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-415-5661 has 1 manufacturer part number on file: 78158-1 (Cooper Machinery Services Llc).
Key specifications for 78158-1: Cotter Pin Hole Diameter: 0.218 INCHES NOMINAL SECOND HOLE IN; Cotter Pin Hole Diameter: 0.406 INCHES NOMINAL THIRD HOLE IN; Thread Length: 2.062 INCHES MINIMUM NUT THREAD A IN; Thread Length: 2.250 INCHES MINIMUM NUT THREAD B IN. 19 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.