PartsTable
Technical Data Sheet
79-077-437-1250 ✓ 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 PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.448 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN, material: STEEL COMP 410 OR STEEL COMP 420 OVERALL, overall_length: 1.250 INCHES NOMINAL IN, shear_strength: 20000 DOUBLE POUND, hardness_rating: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SLOTTED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-059-7667, 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
79-077-437-1250
NSN: 5315-01-059-7667
FSC: 5315
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
diameter0.448 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN
materialSTEEL COMP 410 OR STEEL COMP 420 OVERALL
overall_length1.250 INCHES NOMINAL IN
shear_strength20000 DOUBLE POUND
hardness_rating43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSLOTTED
surface_treatmentPASSIVATE OVERALL
material_thickness0.077 INCHES NOMINAL IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-059-7667
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 79-077-437-1250 · 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: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENT: PASSIVATE OVERALL
DIAMETER: 0.448 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN
MATERIAL THICKNESS: 0.077 INCHES NOMINAL IN
MATERIAL: STEEL COMP 410 OR STEEL COMP 420 OVERALL
STYLE DESIGNATOR: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
DIAMETER0.448 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN
MATERIAL THICKNESS0.077 INCHES NOMINAL IN
MATERIALSTEEL COMP 410 OR STEEL COMP 420 OVERALL
OVERALL LENGTH1.250 INCHES NOMINAL IN
STYLE DESIGNATORSLOTTED
SHEAR STRENGTH20000 DOUBLE POUND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
3179Interchangeable
interchangeable cross-reference
interchangeable
22-02041-001Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
226-7-28Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-7560/1Interchangeable
interchangeable cross-reference
interchangeable
KY25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 79-077-437-1250?
79-077-437-1250 is a PIN,SPRING.
What parts can replace 79-077-437-1250?
There are 16 known substitutes for 79-077-437-1250: 3179, 22-02041-001, 00044 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 79-077-437-1250?
79-077-437-1250 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-059-7667. This indicates validated use in U.S. government and defense supply chains.
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