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971078-3 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

971078-3: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.2500 INCHES NOMINAL IN, overall_height: 0.2500 INCHES NOMINAL IN, overall_length: 0.6250 INCHES NOMINAL IN, style_designator: PLAIN, surface_treatment: CARBON OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-514-6931, 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
971078-3
NSN: 5315-01-514-6931
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 0H5P9 — MACHINE TOOL MASTERS INCORPORATED DBA MTM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.2500 INCHES NOMINAL IN
overall_height0.2500 INCHES NOMINAL IN
overall_length0.6250 INCHES NOMINAL IN
style_designatorPLAIN
surface_treatmentCARBON OVERALL
mounting_hole_depth0.2500 INCHES NOMINAL IN
mounting_hole_diameter0.0620 INCHES NOMINAL IN
end_item_identificationB-1B
mounting_hole_type_and_quantity1 PLAIN
part_name_assigned_by_controlling_agencyKEY,MACHINE,SQUARE
distance_from_mounting_hole_center_to_end0.1250 INCHES NOMINAL IN
NSN5315-01-514-6931
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 971078-3 · 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
•
MOUNTING HOLE TYPE AND QUANTITY: 1 PLAIN
•
STYLE DESIGNATOR: PLAIN
•
MOUNTING HOLE DIAMETER: 0.0620 INCHES NOMINAL IN
•
DISTANCE FROM MOUNTING HOLE CENTER TO END: 0.1250 INCHES NOMINAL IN
•
MOUNTING HOLE DEPTH: 0.2500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.2500 INCHES NOMINAL IN
MOUNTING HOLE TYPE AND QUANTITY1 PLAIN
STYLE DESIGNATORPLAIN
MOUNTING HOLE DIAMETER0.0620 INCHES NOMINAL IN
OVERALL LENGTH0.6250 INCHES NOMINAL IN
OVERALL WIDTH0.2500 INCHES NOMINAL IN
DISTANCE FROM MOUNTING HOLE CENTER TO END0.1250 INCHES NOMINAL IN
MOUNTING HOLE DEPTH0.2500 INCHES NOMINAL IN
SURFACE TREATMENTCARBON OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYKEY,MACHINE,SQUARE
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 971078-3?
971078-3 is a KEY,MACHINE.
What is the NSN for 971078-3?
971078-3 is cataloged in the U.S. Government catalog under NSN 5315-01-514-6931. 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.