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227B7399 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

227B7399: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, diameter: 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN, material: STEEL COMP 416 OVERALL, head_style: HEXAGON, chamfer_length: 0.060 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-251-2971, 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
227B7399
NSN: 5315-01-251-2971
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 05606 — GENERAL DYNAMICS-OTS, INC. DIV ORDNANCE AND TACTICAL SYSTEMS (USA)
SPECIFICATIONS
height0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
diameter0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
materialSTEEL COMP 416 OVERALL
head_styleHEXAGON
chamfer_length0.060 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER
hardness_rating30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSTRAIGHT
surface_treatmentPASSIVATE OVERALL
under_head_length2.140 INCHES MINIMUM AND 2.160 INCHES MAXIMUM IN
width_across_flats0.875 INCHES NOMINAL IN
first_hole_diameter0.156 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
NSN5315-01-251-2971
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 227B7399 · 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: 63.0 MICROINCHES OUTSIDE DIAMETER
•
WIDTH ACROSS FLATS: 0.875 INCHES NOMINAL IN
•
CHAMFER LENGTH: 0.060 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 2.140 INCHES MINIMUM AND 2.160 INCHES MAXIMUM IN
•
FIRST HOLE DIAMETER: 0.156 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER
WIDTH ACROSS FLATS0.875 INCHES NOMINAL IN
CHAMFER LENGTH0.060 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH2.140 INCHES MINIMUM AND 2.160 INCHES MAXIMUM IN
FIRST HOLE DIAMETER0.156 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 227B7399?
227B7399 is a PIN,STRAIGHT,HEADED.
What is the NSN for 227B7399?
227B7399 is cataloged in the U.S. Government catalog under NSN 5315-01-251-2971. 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.