Description
FM Precision Machined IC Test Socket Jig Fixture Set Lot of 4 Semiconductor Lab
This is a lot of four precision machined IC test socket and handler fixture jigs branded with an engraved "fm" maker's mark. The jigs are made from machined aluminum and steel and are designed to hold, align, and clamp integrated circuit packages during testing or handling operations. Each jig features a distinct configuration — adjustable clamping assemblies, spring-loaded return mechanisms, and precision-machined cavities — suited to securing flat or leaded IC packages repeatably in a test or inspection setup.
Specifications & What's Included
- Lot quantity: 4 individual fixture jigs (sold as a set)
- Brand mark: engraved stylized "fm" monogram (full manufacturer name not confirmed)
- Construction: machined aluminum and steel bodies
- Jig 1 (long rail/slide): rectangular tray-style body with adjustable clamping block, graduated scale, and two large knurled thumb screws
- Jig 2 (square body with circular target cavity): marked "586 32" and "STD QUAL 586"; features a circular precision alignment/target cavity on top surface and a "FLAT" engraved clamping bar with two socket-head cap screws
- Jig 3 (rectangular, spring clamp bridge): marked "586135"; features a U-shaped clamp bridge with spring-loaded coil return and cross-pin actuator rod
- Jig 4 (square block with U-channel clamp): features a sliding U-channel clamp mechanism with an adjustable hold-down
- Visible markings: 586135, 586 32, STD QUAL 586, FLAT
- All four jigs included; no additional accessories observed
Applications
Precision IC test fixture jigs like these are used in semiconductor manufacturing, quality control labs, and electronics test environments to hold integrated circuit packages — including flat-pack, DIP, and leaded IC formats — securely and repeatably during electrical testing, burn-in, inspection, or handler operations. The circular target cavity on one jig is characteristic of fixtures used with probe stations or automated test equipment (ATE), where exact XY alignment of the device under test (DUT) is critical. Spring-loaded and screw-adjustable clamping designs allow fast loading and unloading of parts while maintaining consistent contact pressure. These types of tooling fixtures are commonly found in semiconductor fab support labs, board-level test houses, and university or R&D electronics labs. The machined aluminum and steel construction is typical of mid-to-late 20th century precision tooling from specialized fixture makers who supplied custom test handling equipment to the semiconductor and electronics industries.
This lot of 4 FM precision machined IC test socket fixture jigs has been inspected and appears to be in good condition. The jigs show typical wear consistent with lab use — light surface marks and minor scuffing on the machined aluminum and steel bodies — but the clamping mechanisms, screws, and spring components all appear intact and functional. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
FM (maker mark — full brand name not confirmed) |
Model: |
IC Test Socket Fixture Jig |
MPN: |
586135 |
Type: |
IC Test Socket / Handler Fixture Jig |
SKU: |
27010 |
Condition: |
Used – Inspected |
Seller Notes: |
Lot of 4 assorted precision machined IC test fixture jigs; sold as a set |
Material: |
Machined Aluminum / Steel |
Quantity: |
4 pieces (sold as a lot) |
Application / Use Case: |
IC package testing, semiconductor handler fixture, lab test socket |
Features: |
Adjustable clamping screws, spring-loaded components, circular target cavity |
Markings Visible: |
586135, 586 32, STD QUAL 586, FLAT |
Form Factor: |
Benchtop / Handheld Fixture |
Condition Notes: |
Lot of 4 FM precision IC test fixture jigs. Inspected and in good condition. Light surface wear on machined bodies; clamping hardware and springs appear intact. Please view photos and contact us with questions. |
