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97931-21 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

97931-21: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, diameter: 0.1540 INCHES MINIMUM AND 0.1545 INCHES MAXIMUM IN, material: STEEL COMP 440C OVERALL, head_style: PAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION), chamfer_length: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES OVERALL.

This part is cataloged in the U.S. Government catalog under NSN 5315-00-875-9135, 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
97931-21
NSN: 5315-00-875-9135
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
height0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
diameter0.1540 INCHES MINIMUM AND 0.1545 INCHES MAXIMUM IN
materialSTEEL COMP 440C OVERALL
head_stylePAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)
chamfer_length0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES OVERALL
hardness_rating52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSTRAIGHT
pin_chamfer_angle43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM
pin_head_diameter0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
under_head_length0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
NSN5315-00-875-9135
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 97931-21 · 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 OVERALL
•
CHAMFER LENGTH: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
•
PIN CHAMFER ANGLE: 43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM
•
FIRST HOLE DIAMETER: 0.020 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HARDNESS RATING: 52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: STRAIGHT
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
CHAMFER LENGTH0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
PIN CHAMFER ANGLE43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM
FIRST HOLE DIAMETER0.020 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HARDNESS RATING52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
DIAMETER0.1540 INCHES MINIMUM AND 0.1545 INCHES MAXIMUM IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 97931-21?
97931-21 is a PIN,STRAIGHT,HEADED.
What is the NSN for 97931-21?
97931-21 is cataloged in the U.S. Government catalog under NSN 5315-00-875-9135. 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.