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NS203674-3-8 — Technical Data Sheet

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— · 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,CLIP-ON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: FLOATING, lubrication: DRY FILM LUBRICANT, thread_class: 3B, overall_width: 0.447 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-01-716-5858, 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
NS203674-3-8
NSN: 5310-01-716-5858
FSC: 5310
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleFLOATING
lubricationDRY FILM LUBRICANT
thread_class3B
overall_width0.447 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
panel_thickness0.220 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE NUT
nominal_thread_size0.190 INCHES IN
end_item_identificationSPECIAL, AIR VEHICLE, AIRCRAFT
thread_quantity_per_inch32
NSN5310-01-716-5858
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NS203674-3-8 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS2700 NATIONAL STD SINGLE TREATMENT RESPONSE OR ASTM A 967 ASSN STD SINGLE TREATMENT RESPONSE NUT
•
SURFACE TREATMENT: PASSIVATE NUT
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5525 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5731 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5732 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5737 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
PANEL THICKNESS: 0.220 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2700 NATIONAL STD SINGLE TREATMENT RESPONSE OR ASTM A 967 ASSN STD SINGLE TREATMENT RESPONSE NUT
SURFACE TREATMENTPASSIVATE NUT
SURFACE TREATMENTPASSIVATE CLIP
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5525 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5731 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5732 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5737 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD DIRECTIONRIGHT-HAND
PANEL THICKNESS0.220 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
OVERALL WIDTH0.447 INCHES NOMINAL IN
LUBRICATIONDRY FILM LUBRICANT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
04665InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ERM5330InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10016954InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
NS203674-3-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2507-3-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
03A111-3-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NS203674-3-8?
NS203674-3-8 is a NUT,CLIP-ON.
What parts can replace NS203674-3-8?
There are 15 known substitutes for NS203674-3-8: 04665, ERM5330, 10016954 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NS203674-3-8?
NS203674-3-8 is cataloged in the Federal Logistics Information System under NSN 5310-01-716-5858. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026