PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204-030-788-1Roller,linear-Rotary Motion

Bell Textron Inc · NSN 3120-00-633-0821 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-633-0821 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-633-0821. Primary manufacturer part number: 204-030-788-1.
Features
  • Roller,linear-Rotary Motion — FSC 3120
  • Outside Diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
  • Material: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE
  • Bore Length: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
  • Material Document and Classification: ZYTEL 101 FSCM 18873 MFR REF SINGLE MATERIAL RESPONSE
  • Bore Inside Diameter: 0.331 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
  • Casehardening Indicator: NOT CASEHARDENED
  • 5 verified cross-references
Applications
  • Applications requiring Plastic Polyhexamethylene Adipamide construction
General Description

The Roller,linear-Rotary Motion, cataloged under National Stock Number 3120-00-633-0821, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Bell Textron Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-633-0821
Primary Part Number204-030-788-1
Item NameRoller,linear-Rotary Motion
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerBell Textron Inc
StatusACTIVE
Outside Diameter1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
MaterialPLASTIC POLYHEXAMETHYLENE ADIPAMIDE
Bore Length0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
Material Document and ClassificationZYTEL 101 FSCM 18873 MFR REF SINGLE MATERIAL RESPONSE
Bore Inside Diameter0.331 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5342-00-218-5906 INTERCHANGEABLE
Cap,filler Opening
4820-00-239-29913251 INTERCHANGEABLE
Valve,safety Relief
Tactair Fluid Controls Inc
5360-00-291-8837 INTERCHANGEABLE
Spring,helical,extension
3120-00-378-97173251 INTERCHANGEABLE
Bearing,washer,thrust
Manitowoc Engineering Co Division of the Manitowoc Co Inc
5950-00-393-1514SM-B-78757 INTERCHANGEABLE
Transformer,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4030-00-431-553627A12-2 INTERCHANGEABLE
Swaging Sleeve,wire Rope
Lockheed Martin Corporation Div Rotary and Mission Systems
8010-00-431-6213 INTERCHANGEABLE
Remover,paint
5935-00-515-69672816 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
3110-00-554-5968 INTERCHANGEABLE
Bearing,ball,annular
5815-00-714-15463251 INTERCHANGEABLE
Rod
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
Cross-Reference Index
Part NumberManufacturer
204-030-788-1 PRIMARY Bell Textron Inc (USA)
204-030-788-001 Bell Textron Inc (USA)
2816 Progressive Service Co (USA)
3251 Epic Mfg Co Inc (USA)
204-030-788-1 Lockheed Martin Corporation Dba Lockheed Martin Rotary and Mission Systems Div Rms- C6isr (USA)
Related Parts
5342-00-218-5906INTERCHANGEABLE
CAP,FILLER OPENING
4820-00-239-2991INTERCHANGEABLE
VALVE,SAFETY RELIEF
3251
5360-00-291-8837INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
3120-00-378-9717INTERCHANGEABLE
BEARING,WASHER,THRUST
3251
5950-00-393-1514INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
SM-B-78757
4030-00-431-5536INTERCHANGEABLE
SWAGING SLEEVE,WIRE ROPE
27A12-2
8010-00-431-6213INTERCHANGEABLE
REMOVER,PAINT
5935-00-515-6967INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2816
3110-00-554-5968INTERCHANGEABLE
BEARING,BALL,ANNULAR
5815-00-714-1546INTERCHANGEABLE
ROD
3251
5330-00-761-2628INTERCHANGEABLE
GASKET
2816
8010-00-815-2970INTERCHANGEABLE
REMOVER,PAINT
STRIPPER 11-001GL

Frequently Asked Questions

What is NSN 3120-00-633-0821?

NSN 3120-00-633-0821 is a Roller,linear-Rotary Motion, manufactured by Bell Textron Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-633-0821?

NSN 3120-00-633-0821 has 5 cross-referenced part numbers: 204-030-788-1 (Bell Textron Inc), 204-030-788-001 (Bell Textron Inc), 2816 (Progressive Service Co), 3251 (Epic Mfg Co Inc), 204-030-788-1 (Lockheed Martin Corporation Dba Lockheed Martin Rotary and Mission Systems Div Rms- C6isr).

What NSN replaces 3120-00-633-0821?

There are 12 known substitutes for 3120-00-633-0821: 5342-00-218-5906, 4820-00-239-2991, 5360-00-291-8837 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 204-030-788-1?

Key specifications for 204-030-788-1: Outside Diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN; Material: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE; Bore Length: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN; Special Features: DIAMETERS CONCENTRIC WITHIN PORM 0.002 IN. TIR IN. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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