PartsTable
Technical Data Sheet
MIL-DTL-1222TYPE1SYLEA0RB ✓ 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 material: STEEL COMP 303 OVERALL, nut_style: HEXAGON, nut_height: 0.219 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-199-3144, 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-1222TYPE1SYLEA0RB
NSN: 5310-00-199-3144
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleHEXAGON
nut_height0.219 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch20
nondefinitive_spec/std_data3 TYPE AND A OR B STYLE
NSN5310-00-199-3144
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MIL-DTL-1222TYPE1SYLEA0RB · 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
NOMINAL THREAD SIZE: 0.250 INCHES IN
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 20
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND A OR B STYLE
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT: 0.219 INCHES NOMINAL IN
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
NONDEFINITIVE SPEC/STD DATA3 TYPE AND A OR B STYLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT0.219 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLEHEXAGON
MATERIALSTEEL COMP 303 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MILB857TYPE3STYLEA0RBInterchangeable
interchangeable cross-reference
interchangeable
FF-N-836 TY II ST 4Interchangeable
interchangeable cross-reference
interchangeable
E-172-043-434Interchangeable
interchangeable cross-reference
interchangeable
1927Interchangeable
interchangeable cross-reference
interchangeable
G-17402 PC 14Interchangeable
Same NIIN cross-reference
interchangeable
41UT4103-4PC60Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-1222TYPE1SYLEA0RB?
MIL-DTL-1222TYPE1SYLEA0RB is a NUT,PLAIN,HEXAGON.
What parts can replace MIL-DTL-1222TYPE1SYLEA0RB?
There are 7 known substitutes for MIL-DTL-1222TYPE1SYLEA0RB: MILB857TYPE3STYLEA0RB, FF-N-836 TY II ST 4, E-172-043-434 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-1222TYPE1SYLEA0RB?
MIL-DTL-1222TYPE1SYLEA0RB is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-199-3144. This indicates validated use in U.S. government and defense supply chains.
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