PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

149003Ring,lock

American Safety Flight Systems Inc · NSN 1660-00-977-6778 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-977-6778 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-977-6778. Primary manufacturer part number: 149003.
Features
  • Ring,lock — FSC 1660
  • 2 verified cross-references
  • Primary manufacturer: American Safety Flight Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring,lock, cataloged under National Stock Number 1660-00-977-6778, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is American Safety Flight Systems Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing,lock
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersAmerican Safety Flight Systems Inc (CAGE 31441); Conax Florida Corporation (CAGE 62323)
Technical Specifications
ParameterValue
NSN1660-00-977-6778
Primary Part Number149003
Item NameRing,lock
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerAmerican Safety Flight Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3120-00-782-7198149003 INTERCHANGEABLE
Bearing,washer,thrust
Curtiss-Wright Controls, Inc. Div Actuation Division
5935-00-787-8969 INTERCHANGEABLE
Plug,telephone
5961-01-017-0320MM550H/883C INTERCHANGEABLE
Semiconductor Devices,unitized
National Semiconductor Corporation
3405-01-287-9059149003 INTERCHANGEABLE
Insert,backup,bands
Continental Machines Inc
Cross-Reference Index
Part NumberManufacturer
149003 American Safety Flight Systems Inc (USA)
149003 Conax Florida Corporation (USA)
Related Parts
3120-00-782-7198INTERCHANGEABLE
BEARING,WASHER,THRUST
149003
5935-00-787-8969INTERCHANGEABLE
PLUG,TELEPHONE
5961-01-017-0320INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
MM550H/883C
3405-01-287-9059INTERCHANGEABLE
INSERT,BACKUP,BANDS
149003

Frequently Asked Questions

What is NSN 1660-00-977-6778?

NSN 1660-00-977-6778 is a Ring,lock, manufactured by American Safety Flight Systems Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-977-6778?

NSN 1660-00-977-6778 has 2 cross-referenced part numbers: 149003 (American Safety Flight Systems Inc), 149003 (Conax Florida Corporation).

What NSN replaces 1660-00-977-6778?

There are 4 known substitutes for 1660-00-977-6778: 3120-00-782-7198, 5935-00-787-8969, 5961-01-017-0320 and 1 more. Verify interchangeability with system specifications before substitution.

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