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SW28181-D — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SW28181-D: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140H OVERALL, surface_finish: 32.0 MICROINCHES OUTSIDE DIAMETER, first_end_style: CHAMFERED, hardness_rating: 58.0 ROCKWELL C NOMINAL OVERALL, second_end_style: SQUARE, pin_overall_length: 6.939 INCHES MINIMUM AND 6.969 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-325-6981, 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
SW28181-D
NSN: 5315-01-325-6981
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 98255 — DRS SUSTAINMENT SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140H OVERALL
surface_finish32.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleCHAMFERED
hardness_rating58.0 ROCKWELL C NOMINAL OVERALL
second_end_styleSQUARE
special_features0.339 IN. HOLE 3.300 IN. DEEP 0.125 NPT BY 0.380 IN. DEEP LONGITUDINAL LOCATED ON PIN AXIAL INTERSECTED BY 0.250 IN. THRU HOLE PERPENDICULAR DRILLED IN
pin_overall_length6.939 INCHES MINIMUM AND 6.969 INCHES MAXIMUM IN
first_hole_diameter0.406 INCHES NOMINAL IN
pin_overall_diameter1.9937 INCHES MINIMUM AND 1.9940 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.190 INCHES NOMINAL IN
hole_arrangement_styleONE END DRILLED
NSN5315-01-325-6981
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SW28181-D · 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: 32.0 MICROINCHES OUTSIDE DIAMETER
•
FIRST END TAPER LENGTH: 0.190 INCHES NOMINAL IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
FIRST END STYLE: CHAMFERED
•
FIRST HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
HARDNESS RATING: 58.0 ROCKWELL C NOMINAL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES OUTSIDE DIAMETER
FIRST END TAPER LENGTH0.190 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
FIRST END STYLECHAMFERED
FIRST HOLE DIAMETER0.406 INCHES NOMINAL IN
HARDNESS RATING58.0 ROCKWELL C NOMINAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
PIN OVERALL DIAMETER1.9937 INCHES MINIMUM AND 1.9940 INCHES MAXIMUM IN
PIN OVERALL LENGTH6.939 INCHES MINIMUM AND 6.969 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 1
SW28381Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 SW28181-D?
SW28181-D is a PIN,STRAIGHT,HEADLESS.
What parts can replace SW28181-D?
There is 1 known substitute for SW28181-D: SW28381. Substitute compatibility should be verified for your specific system.
What is the NSN for SW28181-D?
SW28181-D is cataloged in the U.S. Government catalog under NSN 5315-01-325-6981. This indicates validated use in U.S. government and defense supply chains.
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