The Ring,click,traversing Mechanism, cataloged under National Stock Number 1005-00-517-4123, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-00-517-4123 |
| Primary Part Number | 5174123 |
| Item Name | Ring,click,traversing Mechanism |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CMPSN 1018-1022,1117,OR 1118,ASTM-A108; 0.870 IN. DIA.; 0.437 IN.HIGH; CENTRAL HOLE IS 0.562 IN. DIA.; 25 EQUALLY SPACED NOTCHES; HEAT TREATMENT=CARBURIZE AT 1600-1650 DEG. F. TO CASE DEPTH OF 0.015-0.020 IN.,OIL QUENCH,TEMPER AT 350 DEG. F. FOR 30 MIN. TO ROCKWELL HARDNESS 15N 88-92; MANGANESE PHOSPHATE,TYPE M,OR ZINC PHOSPHATE,TYPE Z,PER MIL-P-16232,CLASS 1 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A20183 | Fnh Uk Ltd (GBR) |
| 5174123 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| A10728 | Fnh Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 1005005174123 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 717124418704 | 5/9 Secondary reference Ncb Hungary (honvedsegi Egyseges Termekkod) |
| 1005PL0902391 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 1005-00-517-4123 is a Ring,click,traversing Mechanism, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-00-517-4123 has 3 manufacturer part numbers on file: A20183 (Fnh Uk Ltd), 5174123 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), A10728 (Fnh Uk Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5895-00-808-6150. Verify interchangeability with system specifications before substitution.
Key specifications for 5174123: General Characteristics Item Description: STEEL,CMPSN 1018-1022,1117,OR 1118,ASTM-A108; 0.870 IN. DIA.; 0.437 IN.HIGH; CENTRAL HOLE IS 0.562 IN. DIA.; 25 EQUALLY SPACED NOTCHES; HEAT TREATMENT=CARBURIZE AT 1600-1650 DEG. F. TO CASE DEPTH OF 0.015-0.020 IN.,OIL QUENCH,TEMPER AT 350 DEG. F. FOR 30 MIN. TO ROCKWELL HARDNESS 15N 88-92; MANGANESE PHOSPHATE,TYPE M,OR ZINC PHOSPHATE,TYPE Z,PER MIL-P-16232,CLASS 1 IN; End Item Identification: MACHINE GUN,CAL. .50 (M2); NSN 1005-00-322-9715. 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 1005-00-517-4123 has DEMIL Code Q. 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.