PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34257Assembly Spacer

Safe Flight Instrument, Llc · NSN 4920-01-110-3780 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-110-3780 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-110-3780. Primary manufacturer part number: 34257.
Features
  • Assembly Spacer — FSC 4920
  • General Characteristics Item Description: C/O 1 SPACER,1 TAPPED BUSHING
  • 1 verified cross-reference
  • Primary manufacturer: Safe Flight Instrument, Llc
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Assembly Spacer, cataloged under National Stock Number 4920-01-110-3780, 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 Safe Flight Instrument, Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4920-01-110-3780
Primary Part Number34257
Item NameAssembly Spacer
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerSafe Flight Instrument, Llc
StatusACTIVE
General Characteristics Item DescriptionC/O 1 SPACER,1 TAPPED BUSHING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5360-00-680-3379N34252 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
6695-01-065-476834257 INTERCHANGEABLE
Kit,maintenance Set
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
7690-01-168-887234257 INTERCHANGEABLE
Marker,identification
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
4130-01-281-880834257 INTERCHANGEABLE
Receiver-Drier,refr
Standard Motor Products
2530-01-381-9957SW34257 INTERCHANGEABLE
Parts Kit,axle,vehicular,nondriv
Drs Sustainment Systems Inc
1005-01-536-56393425-7 INTERCHANGEABLE
Lock,breech,machine Gun
General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems
Cross-Reference Index
Part NumberManufacturer
34257 PRIMARY Safe Flight Instrument, Llc (USA)
Related Parts
5360-00-680-3379INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
N34252
6695-01-065-4768INTERCHANGEABLE
KIT,MAINTENANCE SET
34257
7690-01-168-8872INTERCHANGEABLE
MARKER,IDENTIFICATION
34257
4130-01-281-8808INTERCHANGEABLE
RECEIVER-DRIER,REFR
34257
2530-01-381-9957INTERCHANGEABLE
PARTS KIT,AXLE,VEHICULAR,NONDRIV
SW34257
1005-01-536-5639INTERCHANGEABLE
LOCK,BREECH,MACHINE GUN
3425-7

Frequently Asked Questions

What is NSN 4920-01-110-3780?

NSN 4920-01-110-3780 is a Assembly Spacer, manufactured by Safe Flight Instrument, Llc, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-110-3780?

NSN 4920-01-110-3780 has 1 cross-referenced part number: 34257 (Safe Flight Instrument, Llc).

What NSN replaces 4920-01-110-3780?

There are 6 known substitutes for 4920-01-110-3780: 5360-00-680-3379, 6695-01-065-4768, 7690-01-168-8872 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34257?

Key specifications for 34257: General Characteristics Item Description: C/O 1 SPACER,1 TAPPED BUSHING; End Item Identification: A10A ACFT AGE.. 2 total characteristics are documented in the Federal Logistics Information System.

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