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Technical Data Sheet
PartsTable / COMPONENT / 22261
22261 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BOX, body_style: STRAIGHT SHAPE, head_style: HEXAGON, head_height: 0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN, input_phase: SINGLE SINGLE OPERATING POWER RQMT, inside_width: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-406-5178, 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
22261
NSN: 5305-00-406-5178
FSC: 5305
CAGE: 3ELJ0 — FASTENAL COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY BOX
body_styleSTRAIGHT SHAPE
head_styleHEXAGON
head_height0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
input_phaseSINGLE SINGLE OPERATING POWER RQMT
inside_width0.250 INCHES NOMINAL IN
inside_length0.875 INCHES NOMINAL IN
overall_width0.250 INCHES MAXIMUM IN
terminal_typeSCREW
overall_height21.500 INCHES NOMINAL IN
overall_length0.880 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
NSN5305-00-406-5178
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 22261 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 2.000 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
HARDNESS RATING: 60.0 ROCKWELL B MINIMUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NONMACHINE NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD HEIGHT0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
HEAD STYLEHEXAGON
FASTENER LENGTH2.000 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
HARDNESS RATING60.0 ROCKWELL B MINIMUM OVERALL
MATERIALSTEEL OVERALL
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH0.125 INCHES MINIMUM FIRST SHOULDER IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
FFB561Interchangeable
interchangeable cross-reference
interchangeable
FF-B-561 TY1ST1GRBInterchangeable
interchangeable cross-reference
interchangeable
MS16992-545Interchangeable
interchangeable cross-reference
interchangeable
1062Interchangeable
interchangeable cross-reference
interchangeable
ANSI B18.2.1Interchangeable
interchangeable cross-reference
interchangeable
1050Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 22261?
22261 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 22261?
There are 17 known substitutes for 22261: FFB561, FF-B-561 TY1ST1GRB, MS16992-545 and 14 more. Substitute compatibility should be verified for your specific system.
Is 22261 still available?
22261 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026