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120-378 — WASHER,FLAT

✓ Government record, cited
Zyxel · NUT WASHER
PRODUCT OVERVIEW

120-378: WASHER,FLAT.

Connectivity Service Secure WiFi Secure WiFi Enforcing Best Practice Security for Work-From-Home Same Security Across Networks Businesses striking a balance on productivity and security protection becomes a priority with growing number of devices. Whether it is a wired, wireless, or a IoT device, the Secure WiFi service ensures the same network controls which can be applied to headquarters and other remote workplaces. Easily and securely extend working experience as if you were in the office with the adoption of secure tunneling and strict two-factor authentication.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-768-0318, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
120-378
NSN: 5310-00-768-0318
NIINs: 007680318, 009988178, 014591310
FSC: 5310 — Nuts and Washers
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.435 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.744 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
end_item_identificationW/S:TRUCK, CARGO, DROPSIDE 2 1/2-TON 6X6 W/E; SMALL EMPLACEMENT EXCAVATOR (R048)/HMMH (X501); LOADER SCOOP; M1062 TANKER, 7500 GAL. SEMI-TRAILER
thread_quantity_per_inch13
NSN5310-00-768-0318
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 120-378 · Zyxel ⚠ 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
•
WIDTH ACROSS FLATS: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 95.0 BRINELL STANDARD MINIMUM
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
NUT HEIGHT: 0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING95.0 BRINELL STANDARD MINIMUM
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
NUT HEIGHT0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 10
10082594Reference document
Same NSN cross-reference
Reference document — Informative reference only
25088493Reference document
Same NSN cross-reference
Reference document — Secondary reference
A20486Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
16A4C5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
87755-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2151697Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 120-378?
120-378 is a WASHER,FLAT manufactured by Zyxel.
What parts can replace 120-378?
There are 10 known substitutes for 120-378: 10082594, 25088493, A20486 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 120-378?
120-378 is cataloged in the U.S. Government catalog under NSN 5310-00-768-0318. This indicates validated use in U.S. government and defense supply chains.
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