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8173991 — PIN,SHOULDER,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8173991: PIN,SHOULDER,HEADED.

The PIN,SHOULDER,HEADED is a the manufacturer industrial component. Key specifications include height: 0.278 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, material: STEEL COMP 1117 OVERALL, head_style: FILLISTER, pin_head_diameter: 0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, surface_treatment: ZINC OVERALL, internal_drive_style: SLOT. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-561-7769, 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
8173991
NSN: 5315-00-561-7769
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
height0.278 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
materialSTEEL COMP 1117 OVERALL
head_styleFILLISTER
pin_head_diameter0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
surface_treatmentZINC OVERALL
internal_drive_styleSLOT
material_document_and_classificationQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-Z-325,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-561-7769
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8173991 · 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-Z-325,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
PIN HEAD DIAMETER: 0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HEAD STYLE: FILLISTER
•
HEIGHT: 0.278 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC OVERALL
•
INTERNAL DRIVE STYLE: SLOT
•
MATERIAL: STEEL COMP 1117 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
PIN HEAD DIAMETER0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEFILLISTER
HEIGHT0.278 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
SURFACE TREATMENTZINC OVERALL
INTERNAL DRIVE STYLESLOT
MATERIALSTEEL COMP 1117 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8173991?
8173991 is a PIN,SHOULDER,HEADED.
What is the NSN for 8173991?
8173991 is cataloged in the U.S. Government catalog under NSN 5315-00-561-7769. 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.