PartsTable
Technical Data Sheet
120376 ✓ Verified by PartsTable
Zyxel · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

<b>Connectivity Service<br>Secure WiFi</b><br><br><b>Secure WiFi</b><br>Enforcing Best Practice<br>Security for Work-From-Home<br><br>Same Security Across Networks<br>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 Federal Logistics Information System (FLIS) under NSN 5310-00-012-0376, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO MRO_GENERAL 120376
NSN: 5310-00-012-0376
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.253 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating121.0 BRINELL STANDARD MINIMUM
special_featuresSWITCH, ROCKER, SPDT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
NSN5310-00-012-0376
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 120376 · 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
THREAD CLASS: 2B
BEARING SURFACE TYPE: FLAT
HARDNESS RATING: 95.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NOMINAL THREAD SIZE: 0.312 INCHES IN
THREAD QUANTITY PER INCH: 18
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
SPECIFICATION/STANDARD DATA: 24617-120376 MANUFACTURERS STANDARD AND 81348-FF-N-836 GOVERNMENT SPECIFICATION AND 96906-MS35690/CANCELED/ GOVERNMENT STANDARD
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OR FF-N-836,TABLE 4,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
BEARING SURFACE TYPEFLAT
HARDNESS RATING95.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD QUANTITY PER INCH18
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
SPECIFICATION/STANDARD DATA24617-120376 MANUFACTURERS STANDARD AND 81348-FF-N-836 GOVERNMENT SPECIFICATION AND 96906-MS35690/CANCELED/ GOVERNMENT STANDARD
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J995,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OR FF-N-836,TABLE 4,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 4 STYLE AND 5/16-18UNC SIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
800-14Interchangeable
interchangeable cross-reference
interchangeable
G317-047-001Interchangeable
interchangeable cross-reference
interchangeable
G5167-003Interchangeable
interchangeable cross-reference
interchangeable
120376Interchangeable
interchangeable cross-reference
interchangeable
45A221-P3CInterchangeable
interchangeable cross-reference
interchangeable
2GL662Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 120376?
120376 is a SWITCH,TOGGLE manufactured by Zyxel. It is classified as a MRO (MRO_GENERAL).
What parts can replace 120376?
There are 19 known substitutes for 120376: 800-14, G317-047-001, G5167-003 and 16 more. Substitute compatibility should be verified for your specific system.
Is 120376 still available?
120376 is currently cancelled.
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