The Bolt,shoulder, cataloged under National Stock Number 5306-00-166-2109, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-166-2109 |
| Primary Part Number | 72664 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 3.680 INCHES NOMINAL IN |
| Shoulder Length | 2.840 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.4465 INCHES MINIMUM AND 0.4470 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.620 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.109 INCHES MINIMUM AND 0.109 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.580 INCHES MINIMUM AND 3.580 INCHES MAXIMUM FIRST 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 |
|---|---|
| 72664 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 72664 | 5/9 Secondary reference Luckey J T Co Inc |
| 72664 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5306-00-166-2109 is a Bolt,shoulder, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-166-2109 has 1 manufacturer part number on file: 72664 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 72664: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 3.680 INCHES NOMINAL IN; Shoulder Length: 2.840 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.4465 INCHES MINIMUM AND 0.4470 INCHES MAXIMUM FIRST SHOULDER 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.