PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A121-52Insulator,bushing

Seastrom Manufacturing Co Inc · NSN 5970-00-983-8948 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-983-8948 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-983-8948. Primary manufacturer part number: A121-52.
Features
  • Insulator,bushing — FSC 5970
  • Shank Outside Diameter: 0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
  • Shank Height: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-M-20693, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
  • Style Designator: SHOULDER
  • Outside Diameter: 0.312 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
  • Inside Diameter: 0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN
Applications
  • Applications requiring Plastic Polyhexamethylene Amide Overall construction
General Description

The Insulator,bushing, cataloged under National Stock Number 5970-00-983-8948, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Seastrom Manufacturing Co Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-983-8948
Primary Part NumberA121-52
Item NameInsulator,bushing
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerSeastrom Manufacturing Co Inc
StatusCANCELLED
Shank Outside Diameter0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
Shank Height0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
Material Document and ClassificationMIL-M-20693, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialPLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
Style DesignatorSHOULDER
Outside Diameter0.312 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Inside Diameter0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
1440-00-203-446158A164D182 INTERCHANGEABLE
Spoiler,missile Exh
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
1680-00-253-9432A12158 INTERCHANGEABLE
Parts Kit,actuator,
Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division
5905-00-432-0370 INTERCHANGEABLE
Resistor,fixed,film
5945-00-451-08782660476 INTERCHANGEABLE
Relay,electromagnetic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3120-00-540-7880A1215-2 INTERCHANGEABLE
Bearing,sleeve
Chrysler Realty Company Llc Dba Daimler Chrysler
1610-00-805-5962560771 INTERCHANGEABLE
Plunger,spring Seat
Hamilton Sundstrand Corporation Dba Collins Aerospace
6610-00-955-202112158 INTERCHANGEABLE
Bar Assy
Aerosonic Llc
Cross-Reference Index
Part NumberManufacturer
1408-58 Lta/d-Cemco Inc Dba D-Cemco (USA)
993306-52 Raytheon Company Dba Raytheon (USA)
W232-52 Fastener Innovation Technology, Inc. Dba F I T (USA)
PR-410-2 Pep West, Inc. Dba Pentair Technical Products Use CAGE Code 61081 for Cataloging Div Pentair Technical Products (USA)
5970009838948 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
PR410-8 Pep West, Inc. Dba Pentair Technical Products Use CAGE Code 61081 for Cataloging Div Pentair Technical Products (USA)
A121-52 PRIMARY Seastrom Manufacturing Co Inc (USA)
2707-18732-N140 Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA)
PR-410-2 Precise of California Div of Adjustable Bushing Corp (USA)
11507652 Us Army Aviation and Missile Command (USA)
5607-71 Seastrom Manufacturing Co Inc (USA)
1408-52 Lta/d-Cemco Inc Dba D-Cemco (USA)
993306-58 Raytheon Company Dba Raytheon (USA)
A121-58 Seastrom Manufacturing Co Inc (USA)
PR410-8 Precise of California Div of Adjustable Bushing Corp (USA)
Related Parts
1440-00-203-4461INTERCHANGEABLE
SPOILER,MISSILE EXH
58A164D182
1680-00-253-9432INTERCHANGEABLE
PARTS KIT,ACTUATOR,
A12158
5905-00-432-0370INTERCHANGEABLE
RESISTOR,FIXED,FILM
5945-00-451-0878INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2660476
3120-00-540-7880INTERCHANGEABLE
BEARING,SLEEVE
A1215-2
1610-00-805-5962INTERCHANGEABLE
PLUNGER,SPRING SEAT
560771
6610-00-955-2021INTERCHANGEABLE
BAR ASSY
12158

Frequently Asked Questions

What is NSN 5970-00-983-8948?

NSN 5970-00-983-8948 is a Insulator,bushing, manufactured by Seastrom Manufacturing Co Inc, classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-983-8948?

NSN 5970-00-983-8948 has 15 cross-referenced part numbers: 1408-58 (Lta/d-Cemco Inc Dba D-Cemco), 993306-52 (Raytheon Company Dba Raytheon), W232-52 (Fastener Innovation Technology, Inc. Dba F I T), PR-410-2 (Pep West, Inc. Dba Pentair Technical Products Use CAGE Code 61081 for Cataloging Div Pentair Technical Products), 5970009838948 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee) and 10 more.

What NSN replaces 5970-00-983-8948?

There are 7 known substitutes for 5970-00-983-8948: 1440-00-203-4461, 1680-00-253-9432, 5905-00-432-0370 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A121-52?

Key specifications for A121-52: Shank Outside Diameter: 0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN; Shank Height: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Material Document and Classification: MIL-M-20693, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-983-8948 still in active supply?

NSN 5970-00-983-8948 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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