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503-871 — SCREW,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

503-871: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FILLISTER, head_height: 0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, hole_diameter: 0.046 INCHES NOMINAL IN, thread_length: 0.312 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-810-3702, 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
503-871
NSN: 5315-00-810-3702
NIINs: 008103702, 009124818
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 27235 — HARDIE-TYNES CO., INC. (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
hole_diameter0.046 INCHES NOMINAL IN
hole_quantity1
thread_length0.312 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
fastener_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
NSN5315-00-810-3702
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 503-871 · 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: QQ-P-416,TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
DIAMETER: 0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSLOTTED
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
DIAMETER0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
OVERALL LENGTH0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SHEAR STRENGTH2100 DOUBLE POUND
MATERIALSTEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
5315PL1369655Reference document
Same NSN cross-reference
Reference document — Informative reference only
60-686 PIECE 871Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
52-028-125-1000Reference document
Same NSN cross-reference
Reference document — Secondary reference
21S.125 1.0000Reference document
Same NSN cross-reference
Reference document — Secondary reference
NAS561P4-16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2611223Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 503-871?
503-871 is a SCREW,MACHINE.
What parts can replace 503-871?
There are 9 known substitutes for 503-871: 5315PL1369655, 60-686 PIECE 871, 52-028-125-1000 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 503-871?
503-871 is cataloged in the U.S. Government catalog under NSN 5315-00-810-3702. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.