PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

643193-27Spacer Assembly

Lockheed Martin Corp · NSN 1680-00-987-0171 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-987-0171 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-987-0171. Primary manufacturer part number: 643193-27.
Features
  • Spacer Assembly — FSC 1680
  • 2 verified cross-references
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Spacer Assembly, cataloged under National Stock Number 1680-00-987-0171, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Lockheed Martin Corp. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSpacer Assembly
FSC / FSG1680 — No Item Name Available (FSG 16)
ManufacturersLockheed Martin Corp (CAGE 98897); Custom Craft Products Inc (CAGE 92541)
Technical Specifications
ParameterValue
NSN1680-00-987-0171
Primary Part Number643193-27
Item NameSpacer Assembly
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5340-00-018-8527 INTERCHANGEABLE
Bumper
5835-00-190-3401 INTERCHANGEABLE
Head,magnetic
5110-00-293-190524007 INTERCHANGEABLE
Die Set,metal Stamping,hand
Hanson C H Company the
5120-00-293-351224007 INTERCHANGEABLE
Punch,center,solid
Mayhew Steel Products Inc
5995-00-430-966824007 INTERCHANGEABLE
Lead,electrical
Hamilton Sundstrand Corporation Dba Collins Aerospace
2915-00-782-175924007 INTERCHANGEABLE
Spraybar,pilot Afterburner
Collins Engine Nozzles, Inc
3020-01-075-509324007 INTERCHANGEABLE
Gear Rack
Moog Inc. Dba Ampac-Isp Corp
3040-01-317-1037240007 INTERCHANGEABLE
Housing,mechanical Drive
Dana Off Highway Products, Llc
8465-01-630-164924007 INTERCHANGEABLE
Snap Link,mountain Piton
Seattle Manufacturing Corporation
6840-01-696-6603 INTERCHANGEABLE
Insecticide,dichlorovos
Cross-Reference Index
Part NumberManufacturer
643193-27 Lockheed Martin Corp (USA)
2400-7 Custom Craft Products Inc (USA)
Related Parts
5340-00-018-8527INTERCHANGEABLE
BUMPER
5835-00-190-3401INTERCHANGEABLE
HEAD,MAGNETIC
5110-00-293-1905INTERCHANGEABLE
DIE SET,METAL STAMPING,HAND
24007
5120-00-293-3512INTERCHANGEABLE
PUNCH,CENTER,SOLID
24007
5995-00-430-9668INTERCHANGEABLE
LEAD,ELECTRICAL
24007
2915-00-782-1759INTERCHANGEABLE
SPRAYBAR,PILOT AFTERBURNER
24007
3020-01-075-5093INTERCHANGEABLE
GEAR RACK
24007
3040-01-317-1037INTERCHANGEABLE
HOUSING,MECHANICAL DRIVE
240007
8465-01-630-1649INTERCHANGEABLE
SNAP LINK,MOUNTAIN PITON
24007
6840-01-696-6603INTERCHANGEABLE
INSECTICIDE,DICHLOROVOS

Frequently Asked Questions

What is NSN 1680-00-987-0171?

NSN 1680-00-987-0171 is a Spacer Assembly, manufactured by Lockheed Martin Corp, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-00-987-0171?

NSN 1680-00-987-0171 has 2 cross-referenced part numbers: 643193-27 (Lockheed Martin Corp), 2400-7 (Custom Craft Products Inc).

What NSN replaces 1680-00-987-0171?

There are 10 known substitutes for 1680-00-987-0171: 5340-00-018-8527, 5835-00-190-3401, 5110-00-293-1905 and 7 more. Verify interchangeability with system specifications before substitution.

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