PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15977Underwater Locator Test Set

Fairchild Industrial Products Company · NSN 4920-01-525-8217 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-525-8217 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-525-8217. Primary manufacturer part number: 15977.
Features
  • Underwater Locator Test Set — FSC 4920
  • 1 verified cross-reference
  • Primary manufacturer: Fairchild Industrial Products Company
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Underwater Locator Test Set, cataloged under National Stock Number 4920-01-525-8217, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Fairchild Industrial Products Company. This item has 1 commercial cross-reference 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
NSN4920-01-525-8217
Primary Part Number15977
Item NameUnderwater Locator Test Set
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerFairchild Industrial Products Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-485-422915977 INTERCHANGEABLE
Nut-Lead Valve Seat
Kidde Technologies, Inc Div Kidde Aerospace and Defense
5330-00-752-8268NAS1593-010 INTERCHANGEABLE
Packing,preformed
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5133-01-399-1229 INTERCHANGEABLE
Drill,twist
5340-01-538-0176 INTERCHANGEABLE
Bracket,mounting
Cross-Reference Index
Part NumberManufacturer
15977 PRIMARY Fairchild Industrial Products Company (USA)
Related Parts
5310-00-485-4229INTERCHANGEABLE
NUT-LEAD VALVE SEAT
15977
5330-00-752-8268INTERCHANGEABLE
PACKING,PREFORMED
NAS1593-010
5133-01-399-1229INTERCHANGEABLE
DRILL,TWIST
5340-01-538-0176INTERCHANGEABLE
BRACKET,MOUNTING

Frequently Asked Questions

What is NSN 4920-01-525-8217?

NSN 4920-01-525-8217 is a Underwater Locator Test Set, manufactured by Fairchild Industrial Products Company, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-525-8217?

NSN 4920-01-525-8217 has 1 cross-referenced part number: 15977 (Fairchild Industrial Products Company).

What NSN replaces 4920-01-525-8217?

There are 4 known substitutes for 4920-01-525-8217: 5310-00-485-4229, 5330-00-752-8268, 5133-01-399-1229 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15977?

Key specifications for 15977: End Item Identification: CN-235 TRANSPORT AIRCRAFT. 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