PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA59400-1A2Tester,spring Resiliency

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 6635-00-545-8500 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-545-8500 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-545-8500. Primary manufacturer part number: AA59400-1A2.
Features
  • Tester,spring Resiliency — FSC 6635
  • Scale Range: +0.0 TO 100.0 GRAMS G
  • Load Receiver Type: HOOK AND PUSH ROD
  • Mounting Method: PORTABLE
  • Criticality Code Justification: BBHK AND BBHL
  • Measurement Unit: GRAM
  • Operation Method: MANUAL
  • Torque Indicating Wrench Usage Feature: NOT INCLUDED
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Tester,spring Resiliency, cataloged under National Stock Number 6635-00-545-8500, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-00-545-8500
Primary Part NumberAA59400-1A2
Item NameTester,spring Resiliency
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Scale Range+0.0 TO 100.0 GRAMS G
Load Receiver TypeHOOK AND PUSH ROD
Mounting MethodPORTABLE
Criticality Code JustificationBBHK AND BBHL
Measurement UnitGRAM
Operation MethodMANUAL
Torque Indicating Wrench Usage FeatureNOT INCLUDED
Nondefinitive Spec/std Data1 CLASS AND A STYLE AND I TYPE
Scale Smallest Increment Graduation4 GM
Unit TypeWEIGHING SCALE
Spring Travel GageNOT INCLUDED
Spring Type for Which DesignedCOMPRESSION AND TENSION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6635-00-182-7534L20 INTERCHANGEABLE
Tester,spring Resiliency
Ametek Inc
5961-00-200-1990351-7802-020 INTERCHANGEABLE
Semiconductor Devices,unitized
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6635-00-449-37505T INTERCHANGEABLE
Tester,spring Resiliency
Martindale Electric Company, the
6635-00-498-7910 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-540-9020 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-557-3237D150M INTERCHANGEABLE
Tester,spring Resiliency
Ametek, Inc. Div Aerospace & Defense
6635-00-578-5285 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-578-5286 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-606-9181LKG05 INTERCHANGEABLE
Tester,spring Resiliency
Ametek, Inc. Div Aerospace & Defense
6635-00-705-5469 INTERCHANGEABLE
Tester,spring Resiliency
Cross-Reference Index
Part NumberManufacturer
AA59400-1A2 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-59400 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
154-1 Ametek Inc. (USA)
MILT43560 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
509-100 Ametek Inc. (USA)
Related Parts
6635-00-182-7534INTERCHANGEABLE
TESTER,SPRING RESILIENCY
L20
5961-00-200-1990INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
351-7802-020
6635-00-449-3750INTERCHANGEABLE
TESTER,SPRING RESILIENCY
5T
6635-00-498-7910INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-540-9020INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-557-3237INTERCHANGEABLE
TESTER,SPRING RESILIENCY
D150M
6635-00-578-5285INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-578-5286INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-606-9181INTERCHANGEABLE
TESTER,SPRING RESILIENCY
LKG05
6635-00-705-5469INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-730-8603INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-790-0733INTERCHANGEABLE
TESTER,SPRING RESILIENCY

Frequently Asked Questions

What is NSN 6635-00-545-8500?

NSN 6635-00-545-8500 is a Tester,spring Resiliency, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-00-545-8500?

NSN 6635-00-545-8500 has 5 cross-referenced part numbers: AA59400-1A2 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-59400 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 154-1 (Ametek Inc.), MILT43560 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 509-100 (Ametek Inc.).

What NSN replaces 6635-00-545-8500?

There are 12 known substitutes for 6635-00-545-8500: 6635-00-182-7534, 5961-00-200-1990, 6635-00-449-3750 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA59400-1A2?

Key specifications for AA59400-1A2: Scale Range: +0.0 TO 100.0 GRAMS G; Load Receiver Type: HOOK AND PUSH ROD; Mounting Method: PORTABLE; Criticality Code Justification: BBHK AND BBHL. 12 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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