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308111 — BOLT,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

308111: BOLT,ASSEMBLED WASHER.

The BOLT,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include head_height: 0.162 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, thread_class: 2A A, special_features: FURNISHED WITH ONE LOCK WASHER ROCKWELL C SCALE 40 MIN,50 MAX, width_between_flats: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, nominal_thread_diameter: 0.250 INCHES IN, extended_washer_diameter: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-121-2890, 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
308111
NSN: 5306-00-121-2890
FSC: 5306 — Bolts
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
head_height0.162 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
thread_class2A A
washer_quantity1
special_featuresFURNISHED WITH ONE LOCK WASHER ROCKWELL C SCALE 40 MIN,50 MAX
width_between_flats0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
nominal_thread_diameter0.250 INCHES IN
extended_washer_diameter0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
extended_washer_thickness0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
primary_washer_outside_diameter0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
primary_washer_material_thickness0.025 INCHES NOMINAL IN
NSN5306-00-121-2890
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 308111 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXTENDED WASHER THICKNESS: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.162 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
PRIMARY WASHER MATERIAL THICKNESS: 0.025 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HEAD HEIGHT0.162 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
PRIMARY WASHER OUTSIDE DIAMETER0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
PRIMARY WASHER MATERIAL THICKNESS0.025 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SPECIAL FEATURESFURNISHED WITH ONE LOCK WASHER ROCKWELL C SCALE 40 MIN,50 MAX
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS2A A
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
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 308111?
308111 is a BOLT,ASSEMBLED WASHER.
What is the NSN for 308111?
308111 is cataloged in the U.S. Government catalog under NSN 5306-00-121-2890. 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.