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40438 — MICROCIRCUIT,DIGITAL

✓ Government record, cited
Lindy · NUT WASHER
PRODUCT OVERVIEW

40438: MICROCIRCUIT,DIGITAL.

With the Lindy USB Type C / Thunderbolt 3 Port Blocker, you can quickly block open ports and easily prevent users from connecting cables, devices or inserting foreign objects without permission. The USB Port Blocker is made up of a combined 'key' and 'lock' assembly which plugs into the USB port. To use, simply plug the 'keylock' into the port and release the latch - the lock remains in place!

Plug the key back into the lock to remove. Easy! With this neat little device, system administrators can physically prevent users from connecting Pen Drives, Mobile Phones and other USB Mass Storage Devices to their computers to copy data and introduce viruses.

Please note: these port blockers are only compatible with the corresponding colour of port blocker key. This part is cataloged in the U.S. Government catalog under NSN 5315-00-187-3274, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
40438
NSN: 5315-00-187-3274
NIINs: 001873274, 002407318, 003309248, 006920041, 007393160, 008766801, 010785748, 015172446, 015338969
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width0.343 INCHES NOMINAL IN
case_styleSQUARE
seal_width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
seat_angle45.0 DEGREES SECOND END
shaft_typeROUND, FLATTED SINGLE ACTUATOR
body_height0.312 INCHES NOMINAL IN
body_length0.751 INCHES NOMINAL IN
bonnet_typeINSIDE SCREW
flat_height0.219 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length0.562 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
NSN5315-00-187-3274
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 40438 · Lindy ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE FINISH: 63.0 MICROINCHES SHANK END
•
FIRST END LOCATION: BOTH ENDS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: OVAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
PIN OVERALL LENGTH: 0.875 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
PIN SIZE DESIGNATION: 3/0
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES SHANK END
FIRST END LOCATIONBOTH ENDS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLEOVAL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL LENGTH0.875 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
PIN SIZE DESIGNATION3/0
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
8Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0404-038Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6L3903-14-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS24692-108Reference document
Same NSN cross-reference
Reference document — Secondary reference
NASM24692Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
0404-38Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40438?
40438 is a MICROCIRCUIT,DIGITAL manufactured by Lindy.
What parts can replace 40438?
There are 6 known substitutes for 40438: 8, 0404-038, 6L3903-14-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40438?
40438 is cataloged in the U.S. Government catalog under NSN 5315-00-187-3274. This indicates validated use in U.S. government and defense supply chains.
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