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902277 — WASHER,FLAT

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

902277: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.125 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.205 INCHES MAXIMUM IN, thread_length: 0.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-078-0934, 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
902277
NSN: 5305-01-078-0934
NIINs: 010780934, 016824259
FSC: 5305 — Screws
CAGE: 04643 — COMTEC INFORMATION SYSTEMS INC DIGITRONICS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.125 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.205 INCHES MAXIMUM IN
thread_length0.750 INCHES MAXIMUM IN
fastener_length0.750 INCHES MAXIMUM IN
hardness_rating33.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats0.095 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-078-0934
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 902277 · 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
•
WIDTH ACROSS FLATS: 0.095 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.125 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.750 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.750 INCHES MAXIMUM IN
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.125 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.095 INCHES NOMINAL IN
HEAD HEIGHT0.125 INCHES MAXIMUM IN
FASTENER LENGTH0.750 INCHES MAXIMUM IN
THREAD LENGTH0.750 INCHES MAXIMUM IN
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.125 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTOXIDE OVERALL
INTERNAL DRIVE STYLEHEXAGON
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 902277?
902277 is a WASHER,FLAT.
What is the NSN for 902277?
902277 is cataloged in the U.S. Government catalog under NSN 5305-01-078-0934. 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.