PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MIL-DTL-1222TYIII GR400 QQ-N-2
MIL-DTL-1222TYIII GR400 QQ-N-2 ✓ Verified by PartsTable
— · NUT WASHER
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

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include thread_class: 3B, thread_series: UN, thread_direction: RIGHT-HAND, nominal_thread_size: 1.250 INCHES IN, departure_from_cited_document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS, criticality_code_justification: ZZZW. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-347-4302, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MIL-DTL-1222TYIII GR400 QQ-N-2
NSN: 5310-01-347-4302
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
thread_class3B
thread_seriesUN
thread_directionRIGHT-HAND
nominal_thread_size1.250 INCHES IN
thread_quantity_per_inch8
departure_from_cited_documentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
criticality_code_justificationZZZW
NSN5310-01-347-4302
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MIL-DTL-1222TYIII GR400 QQ-N-2 · OEM ⚠ 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: 3B
•
THREAD QUANTITY PER INCH: 8
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
THREAD DIRECTION: RIGHT-HAND
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
THREAD SERIES: UN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
THREAD QUANTITY PER INCH8
NOMINAL THREAD SIZE1.250 INCHES IN
CRITICALITY CODE JUSTIFICATIONZZZW
THREAD DIRECTIONRIGHT-HAND
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
THREAD SERIESUN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
MIL-DTL-1222 TYPE IIIL1Interchangeable
interchangeable cross-reference
interchangeable
655-8803PCF11L1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 GR500L1Interchangeable
interchangeable cross-reference
interchangeable
5/8-11UNC-2A X 4 1/2 INCHESL1Interchangeable
interchangeable cross-reference
interchangeable
QQ-N-281 GRADE 400, CLASS AInterchangeable
interchangeable cross-reference
interchangeable
5/8-11UNC-2A X 4 1/2 INCHESInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MIL-DTL-1222TYIII GR400 QQ-N-2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-1222TYIII GR400 QQ-N-2?
MIL-DTL-1222TYIII GR400 QQ-N-2 is a NUT,PLAIN,HEXAGON.
What parts can replace MIL-DTL-1222TYIII GR400 QQ-N-2?
There are 29 known substitutes for MIL-DTL-1222TYIII GR400 QQ-N-2: MIL-DTL-1222 TYPE IIIL1, 655-8803PCF11L1, MIL-DTL-1222 GR500L1 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-1222TYIII GR400 QQ-N-2?
MIL-DTL-1222TYIII GR400 QQ-N-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-347-4302. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MIL-DTL-1222TYIII GR400 QQ-N-2

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026