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PartsTable / COMPONENT / 1037-662
1037-662 ✓ 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, head_style: FLAT CHAMFER, head_height: 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-551-7770, 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
1037-662
NSN: 5310-00-551-7770
FSC: 5310
CAGE: 28839 — TELEDYNE INDUSTRIES INC TELEDYNE POWER SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
head_styleFLAT CHAMFER
head_height0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
fastener_length0.375 INCHES NOMINAL IN
hardness_rating25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5310-00-551-7770
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1037-662 · 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
•
HOLE DIAMETER: 0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
NONDEFINITIVE SPEC/STD DATA: 1 STYLE AND A CLASS
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 0.202 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
NONDEFINITIVE SPEC/STD DATA1 STYLE AND A CLASS
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.202 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL THICKNESS0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MS51958-15Interchangeable
interchangeable cross-reference
interchangeable
FF-W-84CLASSAST YLE1N04CADInterchangeable
interchangeable cross-reference
interchangeable
5310PL1368935Interchangeable
interchangeable cross-reference
interchangeable
1037-662Interchangeable
interchangeable cross-reference
interchangeable
5953040Interchangeable
Same NIIN cross-reference
interchangeable
AS142CC4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1037-662?
1037-662 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 1037-662?
There are 11 known substitutes for 1037-662: MS51958-15, FF-W-84CLASSAST YLE1N04CAD, 5310PL1368935 and 8 more. Substitute compatibility should be verified for your specific system.
Is 1037-662 still available?
1037-662 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026