PartsTable TECHNICAL DATA SHEET

NSN 3020-01-520-8129Government record, cited

Gear, Spur3020-01-520-8129

NSN 3020-01-520-8129 · NIIN 015208129 · Part number RC31803

Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 48ZY0

Government record, cited

NSN 3020-01-520-8129 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-520-8129. Manufacturer of record part number: RC31803.

Also searched as 3020-01-520-8129 · 3020015208129 · NIIN 015208129 · 01-520-8129 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 48ZY0 · RC31803 · RB31803

Nearby stock numbers ← 3020-01-520-7911 Pulley, Flat · 3020-01-520-8878 Gear, Internal →

Features

Gear,spur — FSC 3020
1 manufacturer part number on file
Manufacturer of record: Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc

Identification

NSN: 3020-01-520-8129
NIIN: 015208129
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: RC31803
Manufacturer: Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc

General Description

The Gear,spur, cataloged under National Stock Number 3020-01-520-8129, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	3020-01-520-8129
Primary Part Number	RC31803
Item Name	Gear,spur
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer	Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
RC31803 PRIMARY	Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (USA)

Reference documents

Reference	Meaning
RB31803	5/9 Secondary reference Kilgore Flares Company Llc
RC31803	5/9 Secondary reference Kilgore Flares Company Llc

No interchangeability data on file.

Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3020-00-000-0091

GEAR,SPUR

3020-00-001-0027

3020-00-001-0027 · Item name not on file

3020-00-001-0028

3020-00-001-0028 · Item name not on file

3020-00-001-0063

3020-00-001-0063 · Item name not on file

3020-00-001-0064

3020-00-001-0064 · Item name not on file

3020-00-001-0066

3020-00-001-0066 · Item name not on file

3020-00-001-0071

3020-00-001-0071 · Item name not on file

3020-00-001-0072

3020-00-001-0072 · Item name not on file

Frequently Asked Questions

What is NSN 3020-01-520-8129?

NSN 3020-01-520-8129 is a Gear,spur, manufactured by Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-01-520-8129?

NSN 3020-01-520-8129 has 1 manufacturer part number on file: RC31803 (Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc).

What are the specifications of RC31803?

Key specifications for RC31803: Special Features: T.O. 12P3-2ALE24-4 FIG 2-7 IND 31; NHA P/N RB31821 USED IN RC18-102; Part Name Assigned by Controlling Agency: GEAR SPUR; End Item Identification: B52H/ANALR20A. 0 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-520-8129 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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