PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5TTester,spring Resiliency

Martindale Electric Company, the · NSN 6635-00-449-3750 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-449-3750 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-449-3750. Primary manufacturer part number: 5T.
Features
  • Tester,spring Resiliency — FSC 6635
  • Spring Travel Gage: NOT INCLUDED
  • Scale Smallest Increment Graduation: 1 OZ OZ
  • Scale Range: +0.0 TO 80.0 OUNCES OZ
  • Mounting Method: PORTABLE
  • Load Receiver Type: HOOK AND PUSH ROD
  • Criticality Code Justification: BBHK AND BBHL
  • Unit Type: WEIGHING SCALE
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Tester,spring Resiliency, cataloged under National Stock Number 6635-00-449-3750, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Martindale Electric Company, the. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6635-00-449-3750
Primary Part Number5T
Item NameTester,spring Resiliency
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerMartindale Electric Company, the
StatusCANCELLED
Spring Travel GageNOT INCLUDED
Scale Smallest Increment Graduation1 OZ OZ
Scale Range+0.0 TO 80.0 OUNCES OZ
Mounting MethodPORTABLE
Load Receiver TypeHOOK AND PUSH ROD
Criticality Code JustificationBBHK AND BBHL
Unit TypeWEIGHING SCALE
Measurement UnitOUNCE
Operation MethodMANUAL
Spring Type for Which DesignedCOMPRESSION AND TENSION
Nondefinitive Spec/std Data1 CLASS AND A STYLE AND I TYPE
Torque Indicating Wrench Usage FeatureNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5960-00-268-32005010REVD INTERCHANGEABLE
Retainer,electron Tube
Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
7350-00-290-0577 INTERCHANGEABLE
Cup,disposable
5120-00-494-191110WR INTERCHANGEABLE
Wrench,plier
Stanley Tools Div of Stanley Works
6635-00-498-7910 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-540-9020 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-545-8500 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
Cross-Reference Index
Part NumberManufacturer
5T PRIMARY Martindale Electric Company, the (USA)
1050 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
MILT43560 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1050 Snap-on Tools Corp Algona Plant Independently Owned and Operated (USA)
Related Parts
5960-00-268-3200INTERCHANGEABLE
RETAINER,ELECTRON TUBE
5010REVD
7350-00-290-0577INTERCHANGEABLE
CUP,DISPOSABLE
5120-00-494-1911INTERCHANGEABLE
WRENCH,PLIER
10WR
6635-00-498-7910INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-540-9020INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-545-8500INTERCHANGEABLE
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
6635-00-790-0733INTERCHANGEABLE
TESTER,SPRING RESILIENCY

Frequently Asked Questions

What is NSN 6635-00-449-3750?

NSN 6635-00-449-3750 is a Tester,spring Resiliency, manufactured by Martindale Electric Company, the, classified under FSC 6635 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6635-00-449-3750?

NSN 6635-00-449-3750 has 4 cross-referenced part numbers: 5T (Martindale Electric Company, the), 1050 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), MILT43560 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 1050 (Snap-on Tools Corp Algona Plant Independently Owned and Operated).

What NSN replaces 6635-00-449-3750?

There are 12 known substitutes for 6635-00-449-3750: 5960-00-268-3200, 7350-00-290-0577, 5120-00-494-1911 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5T?

Key specifications for 5T: Spring Travel Gage: NOT INCLUDED; Scale Smallest Increment Graduation: 1 OZ OZ; Scale Range: +0.0 TO 80.0 OUNCES OZ; Mounting Method: PORTABLE. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6635-00-449-3750 still in active supply?

NSN 6635-00-449-3750 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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