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21649-3 — HANDWHEEL

✓ Government record, cited
Hama · ORING SEAL
PRODUCT OVERVIEW

21649-3: HANDWHEEL.

Urban street style - epitomised by the "Merida" notebook backpack! Stay trendy on those city streets - whether you're at uni or on your way to work. The laptop and tablet backpack also impresses with its functions: the roll-top system adapts flexibly to the contents.

- Whether you want to carry your laptop, tablet or both: There’s one compartment for notebooks up to 40 cm (15.6") and one for tablets up to 28 cm (11") - The roll-top closure can be flexibly adjusted according to the volume of the items placed inside - Padded laptop compartment for reliable protection during transportation - Padded back for ergonomic and comfortable carrying - Spacious front pockets for additional accessories or personal items - Soft inside lining that protects the sensitive surface of the case This part is cataloged in the U.S. Government catalog under NSN 5340-00-285-1836, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
21649-3
NSN: 5340-00-285-1836
FSC: 5340 — Hardware, Commercial
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
ratchetNOT INCLUDED
materialIRON CAST OVERALL
hub_length0.620 INCHES NOMINAL IN
drive_width0.375 INCHES NOMINAL IN
overall_depth0.620 INCHES NOMINAL IN
overall_height1.030 INCHES NOMINAL IN
spoke_quantity4
handwheel_styleGRIPS
outside_diameter4.750 INCHES NOMINAL IN
special_featuresDRIVE FACILITY TAPERED 3/4 IN.PER FT IN
spoke_angle_in_deg90.0
drive_facility_styleSQUARE WITH DIAGONAL CORNER
NSN5340-00-285-1836
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21649-3 MFR: Hama ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HUB OUTSIDE DIAMETER: 1.200 INCHES NOMINAL IN
•
HANDLE ROTATING FEATURE: NOT INCLUDED
•
HUB LENGTH: 0.620 INCHES NOMINAL IN
•
DRIVE WIDTH: 0.375 INCHES NOMINAL IN
•
HANDLE COUNTERBALANCING WEIGHT: NOT INCLUDED
•
SPOKE ANGLE IN DEG: 90.0
•
RATCHET: NOT INCLUDED
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.030 INCHES NOMINAL IN
HUB OUTSIDE DIAMETER1.200 INCHES NOMINAL IN
HANDLE ROTATING FEATURENOT INCLUDED
HUB LENGTH0.620 INCHES NOMINAL IN
DRIVE WIDTH0.375 INCHES NOMINAL IN
HANDLE COUNTERBALANCING WEIGHTNOT INCLUDED
SPOKE ANGLE IN DEG90.0
RATCHETNOT INCLUDED
OUTSIDE DIAMETER4.750 INCHES NOMINAL IN
DRIVE FACILITY STYLESQUARE WITH DIAGONAL CORNER
SUBSTITUTES & CROSS-REFERENCES 2
5S1955Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5S1955-3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21649-3?
21649-3 is a HANDWHEEL manufactured by Hama.
What parts can replace 21649-3?
There are 2 known substitutes for 21649-3: 5S1955, 5S1955-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 21649-3?
21649-3 is cataloged in the U.S. Government catalog under NSN 5340-00-285-1836. This indicates validated use in U.S. government and defense supply chains.
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