The Tester,spring Resiliency, cataloged under National Stock Number 6635-00-822-7296, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Willrich Precision Instrument Company, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-00-822-7296 |
| Primary Part Number | DG500 W/MT500HS2B2 |
| Item Name | Tester,spring Resiliency |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Willrich Precision Instrument Company, Inc |
| Status | ACTIVE |
| Load Receiver Type | PLATFORM |
| Mounting Method | PORTABLE |
| Reference Data and Literature | NA 17-15BU-3 & 17-20MF-05 |
| Scale Range | +0.0 TO 500.0 POUNDS LBS |
| Spring Type for Which Designed | COMPRESSION AND TENSION |
| Torque Indicating Wrench Usage Feature | NOT INCLUDED |
| Spring Maximum Outside Diameter Accommodated | 4.875 INCHES IN |
| Unit Type | WEIGHING SCALE |
| Spring Travel Gage | NOT INCLUDED |
| Functional Classification | AA-8.8 |
| Entry Date | 74-09-01 |
| Functional Description | PORTABLE,QUICK ACTION,HIGH READABILITY; USED FOR TESTING TENSILE OR COMPRESSION STR OF FABRIC,PAPER,STRING,PLASTIC,& RUBBER,UP TO BREAKING PT OR FOR PILL CRUSHING OR PIERCING APPL; CONSTR TO WITHSTAND CONSTANT USE AT FULL LOADS |
| Scale Smallest Increment Graduation | 1.00 LB SMALLEST INCREMENT LBS |
| Spring Maximum Overall Free Length Accommodated | 12.000 INCHES IN |
| Operation Method | MANUAL |
| Measurement Unit | POUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EL6-500 | Link Engineering Co (USA) |
| MST-500 | Ametek Inc. (USA) |
| DG500 W/MT500HS2B2 PRIMARY | Willrich Precision Instrument Company, Inc (USA) |
| BTC-FR2.5TN.D09 | Zwickroell, Lp (USA) |
| Reference | Meaning |
|---|---|
| PB5A500 | 5/9 Secondary reference Link Engineering Co |
| 6635PL0915776 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| DG500 W/MT500HS1B2 | 5/9 Secondary reference Willrich Precision Instrument Company, Inc |
| DG500 W/MT500HS1B2 | 5/2 Secondary reference U.S. Government activity |
| 200135717 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 6635-00-822-7296 is a Tester,spring Resiliency, manufactured by Willrich Precision Instrument Company, Inc, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-00-822-7296 has 4 manufacturer part numbers on file: EL6-500 (Link Engineering Co), MST-500 (Ametek Inc.), DG500 W/MT500HS2B2 (Willrich Precision Instrument Company, Inc), BTC-FR2.5TN.D09 (Zwickroell, Lp).
1 possible match (shared part number, not a government interchangeability claim): 6625-00-992-0941. Verify interchangeability with system specifications before substitution.
Key specifications for DG500 W/MT500HS2B2: Load Receiver Type: PLATFORM; Mounting Method: PORTABLE; Reference Data and Literature: NA 17-15BU-3 & 17-20MF-05; Scale Range: +0.0 TO 500.0 POUNDS LBS. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.