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121901-01 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

121901-01: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1117 OVERALL, nut_diameter: 0.625 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN, thread_series: UNEF, surface_treatment: OXIDE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-264-1642, 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
121901-01
NSN: 5310-01-264-1642
FSC: 5310 — Nuts and Washers
CAGE: 3CPE0 — SAFRAN POWER USA LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1117 OVERALL
nut_diameter0.625 INCHES NOMINAL IN
thread_class2B
nut_thickness0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
thread_seriesUNEF
surface_treatmentOXIDE OVERALL
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch32
material_document_and_classificationASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-F-13924,CL 1,GR A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-264-1642
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121901-01 · 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: MIL-F-13924,CL 1,GR A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNEF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT DIAMETER: 0.625 INCHES NOMINAL IN
•
NUT THICKNESS: 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
•
SURFACE TREATMENT: OXIDE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-13924,CL 1,GR A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNEF
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD SIZE0.375 INCHES IN
NUT DIAMETER0.625 INCHES NOMINAL IN
NUT THICKNESS0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
SURFACE TREATMENTOXIDE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS2B
THREAD QUANTITY PER INCH32
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121901-01?
121901-01 is a NUT,PLAIN,ROUND.
What is the NSN for 121901-01?
121901-01 is cataloged in the U.S. Government catalog under NSN 5310-01-264-1642. This indicates validated use in U.S. government and defense supply chains.
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