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8720578 — PIN,TAPERED,PLAIN

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8720578: PIN,TAPERED,PLAIN.

The PIN,TAPERED,PLAIN is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OVERALL, pin_taper: 0.250 PER FOOT IN INCHES, surface_finish: 125.0 MICROINCHES OUTSIDE DIAMETER, first_end_style: SQUARE, hardness_rating: 89.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 91.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL, first_end_location: BOTH ENDS. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-116-8149, 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
8720578
NSN: 5315-01-116-8149
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OVERALL
pin_taper0.250 PER FOOT IN INCHES
surface_finish125.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleSQUARE
hardness_rating89.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 91.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
first_end_locationBOTH ENDS
large_end_diameter0.4980 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
pin_overall_length1.880 INCHES NOMINAL IN
material_document_and_classificationASTM A576 FED SPEC ALL MATERIAL RESPONSES OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-01-116-8149
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8720578 · 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 FINISH: 125.0 MICROINCHES OUTSIDE DIAMETER
•
FIRST END LOCATION: BOTH ENDS
•
LARGE END DIAMETER: 0.4980 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
•
FIRST END STYLE: SQUARE
•
PIN TAPER: 0.250 PER FOOT IN INCHES
•
HARDNESS RATING: 89.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 91.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
PIN OVERALL LENGTH: 1.880 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER
FIRST END LOCATIONBOTH ENDS
LARGE END DIAMETER0.4980 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
FIRST END STYLESQUARE
PIN TAPER0.250 PER FOOT IN INCHES
HARDNESS RATING89.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 91.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A576 FED SPEC ALL MATERIAL RESPONSES OVERALL
PIN OVERALL LENGTH1.880 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OVERALL
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 1
CS-2300-0001Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 8720578?
8720578 is a PIN,TAPERED,PLAIN.
What parts can replace 8720578?
There is 1 known substitute for 8720578: CS-2300-0001. Substitute compatibility should be verified for your specific system.
What is the NSN for 8720578?
8720578 is cataloged in the U.S. Government catalog under NSN 5315-01-116-8149. 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.