The Packing Nut, cataloged under National Stock Number 4730-00-737-5817, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Dcm Manufacturing, Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-737-5817 |
| Primary Part Number | A1620 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Dcm Manufacturing, Inc. |
| Status | ACTIVE |
| Screw Thread Location | INTERNAL |
| Material | COPPER ALLOY |
| Thread Size | 1IN-20 IN |
| Thread Direction | RIGHT-HAND |
| Width Across Flats | 1.125 INCHES NOMINAL IN |
| Length to Shoulder | 0.281 INCHES NOMINAL IN |
| Smallest Inside Diameter | 0.563 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Class | 2B |
| Screw Thread Series Designator | UNEF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 7375817 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| A1620 PRIMARY | Dcm Manufacturing, Inc. (USA) |
| RC7159 | Berry-Hill Corp (USA) |
| RC7159 | Hatch & Kirk, Inc. (USA) |
| 4730007375817 | E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 4730-00-737-5817 is a Packing Nut, manufactured by Dcm Manufacturing, Inc., classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-737-5817 has 5 cross-referenced part numbers: 7375817 (U S Army Tank Automotive Command Amsta-Im-Mm), A1620 (Dcm Manufacturing, Inc.), RC7159 (Berry-Hill Corp), RC7159 (Hatch & Kirk, Inc.), 4730007375817 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee).
There are 9 known substitutes for 4730-00-737-5817: 3110-00-100-0348, 3455-00-231-3524, 5945-00-369-0429 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for A1620: Screw Thread Location: INTERNAL; Material: COPPER ALLOY; Overall Length: 0.375 INCHES NOMINAL IN; Thread Size: 1IN-20 IN. 13 total characteristics are documented in the Federal Logistics Information System.