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Technical Data Sheet
PartsTable / COMPONENT / 611788
611788 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The WASHER,FUEL PUMP is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT CHAMFER, head_height: 0.062 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.250 INCHES NOMINAL IN, thread_length: 0.188 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-639-1223, 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
611788
NSN: 5305-00-639-1223
FSC: 5305
CAGE: 06650 — BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFLAT CHAMFER
head_height0.062 INCHES NOMINAL IN
thread_class2A A
head_diameter0.250 INCHES NOMINAL IN
thread_length0.188 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.110 INCHES NOMINAL IN
shoulder_length0.828 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.184 INCHES MINIMUM AND 0.188 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
NSN5305-00-639-1223
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 611788 · 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
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD DIAMETER: 0.250 INCHES NOMINAL IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD CLASS: 2A A
•
FASTENER LENGTH: 1.110 INCHES NOMINAL IN
•
THREAD LENGTH: 0.188 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.062 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 36
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLESLOT
HEAD DIAMETER0.250 INCHES NOMINAL IN
HEAD STYLEFLAT CHAMFER
THREAD CLASS2A A
FASTENER LENGTH1.110 INCHES NOMINAL IN
THREAD LENGTH0.188 INCHES NOMINAL IN
HEAD HEIGHT0.062 INCHES NOMINAL IN
THREAD QUANTITY PER INCH36
MATERIALSTEEL COMP 303 OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
GGG-D-296 TY1SEAInterchangeable
interchangeable cross-reference
interchangeable
31181Interchangeable
interchangeable cross-reference
interchangeable
23220Interchangeable
interchangeable cross-reference
interchangeable
6L1022Interchangeable
interchangeable cross-reference
interchangeable
1205041Interchangeable
interchangeable cross-reference
interchangeable
17617Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 611788?
611788 is a WASHER,FUEL PUMP.
What parts can replace 611788?
There are 10 known substitutes for 611788: GGG-D-296 TY1SEA, 31181, 23220 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 611788?
611788 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-639-1223. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026