The Ring,tension,catapult, cataloged under National Stock Number 1720-00-591-3835, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is Skill-Metric Machine and Tool, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1720-00-591-3835 |
| Primary Part Number | 502851-4 |
| Item Name | Ring,tension,catapult |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Manufacturer | Skill-Metric Machine and Tool, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; CADMIUM PL FIN; 0.45 IN. MAX W 1.5 IN. PORM 0.005 OD 0.12 IN. WALL THK; BLUE; 10000 LB P0.15 M0.0 RATED BREAK STRENGTH LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 502851-4 | Skill-Metric Machine and Tool, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 502851-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1720-00-591-3835 is a Ring,tension,catapult, manufactured by Skill-Metric Machine and Tool, Inc., classified under FSC 1720, Aircraft Launching Equipment. Status: active.
NSN 1720-00-591-3835 has 1 manufacturer part number on file: 502851-4 (Skill-Metric Machine and Tool, Inc.).
Key specifications for 502851-4: General Characteristics Item Description: STEEL; CADMIUM PL FIN; 0.45 IN. MAX W 1.5 IN. PORM 0.005 OD 0.12 IN. WALL THK; BLUE; 10000 LB P0.15 M0.0 RATED BREAK STRENGTH LBS. 1 specification is 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.
NSN 1720-00-591-3835 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.