PartsTable
Technical Data Sheet
219205 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

NUT,PLAIN,SINGLE BALL SEAT,HEXAG. Key specifications include nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 0.724 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN, thread_series: UNF, thread_direction: RIGHT-HAND, width_across_flats: 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN, nominal_thread_size: 0.875 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-080-2211, 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
219205
NSN: 5310-01-080-2211
FSC: 5310
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
nut_styleSINGLE BALL SEAT, HEXAGON
nut_height0.724 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
nominal_thread_size0.875 INCHES IN
bearing_surface_finish250.0 MICROINCHES
end_item_identification2320-01-452-5579
thread_quantity_per_inch14
NSN5310-01-080-2211
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 219205 · 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
FABRICATION METHOD: FORGED
THREAD DIRECTION: RIGHT-HAND
WING SPREAD WIDTH: 1.310 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA: A TYPE AND 1 STYLE AND 0.500 SIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
MATERIAL: STEEL OVERALL
NUT STYLE: WING
TECHNICAL CHARACTERISTICS (FLIS)
FABRICATION METHODFORGED
THREAD DIRECTIONRIGHT-HAND
WING SPREAD WIDTH1.310 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAA TYPE AND 1 STYLE AND 0.500 SIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
NUT STYLEWING
OVERALL HEIGHT0.650 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
BODY DIAMETER0.640 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
FFN845Interchangeable
interchangeable cross-reference
interchangeable
MS35426-16Interchangeable
interchangeable cross-reference
interchangeable
300199Interchangeable
interchangeable cross-reference
interchangeable
5900025-0000.003Interchangeable
interchangeable cross-reference
interchangeable
5310008278487Interchangeable
interchangeable cross-reference
interchangeable
9987-961 ITEM 173Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 219205?
219205 is a NUT,PLAIN,SINGLE BALL SEAT,HEXAG.
What parts can replace 219205?
There are 12 known substitutes for 219205: FFN845, MS35426-16, 300199 and 9 more. Substitute compatibility should be verified for your specific system.
Is 219205 still available?
219205 is currently cancelled.
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