PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21050-2Push Button,bearing Block

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 3120-01-100-4961 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-100-4961 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-100-4961. Primary manufacturer part number: 21050-2.
Features
  • Push Button,bearing Block — FSC 3120
  • General Characteristics Item Description: PLASTIC,4 HOLES 0.187 DIA 0.038 DEEP,8 HOLES 0.125 DIA,5.830 IN. LG,1.250 IN. W,0.310 THK IN
  • 2 verified cross-references
  • Primary manufacturer: Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Push Button,bearing Block, cataloged under National Stock Number 3120-01-100-4961, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-100-4961
Primary Part Number21050-2
Item NamePush Button,bearing Block
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
General Characteristics Item DescriptionPLASTIC,4 HOLES 0.187 DIA 0.038 DEEP,8 HOLES 0.125 DIA,5.830 IN. LG,1.250 IN. W,0.310 THK IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6130-00-361-17652-10502 INTERCHANGEABLE
Power Supply
Excelitas Technologies Corp
4730-01-347-7337VS48F10-8 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corp Div Fluid System Connector Division
5910-01-383-9623210502 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Datron World Communications, Inc.
6150-01-652-7225210-502 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Skc Inc
Cross-Reference Index
Part NumberManufacturer
21050-2 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21050-2E Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
6130-00-361-1765INTERCHANGEABLE
POWER SUPPLY
2-10502
4730-01-347-7337INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
VS48F10-8
5910-01-383-9623INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
210502
6150-01-652-7225INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
210-502

Frequently Asked Questions

What is NSN 3120-01-100-4961?

NSN 3120-01-100-4961 is a Push Button,bearing Block, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-100-4961?

NSN 3120-01-100-4961 has 2 cross-referenced part numbers: 21050-2 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21050-2E (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 3120-01-100-4961?

There are 4 known substitutes for 3120-01-100-4961: 6130-00-361-1765, 4730-01-347-7337, 5910-01-383-9623 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21050-2?

Key specifications for 21050-2: General Characteristics Item Description: PLASTIC,4 HOLES 0.187 DIA 0.038 DEEP,8 HOLES 0.125 DIA,5.830 IN. LG,1.250 IN. W,0.310 THK IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com