CONTACT Belleville NARROW Springs®
    Inch Dimensions  
Part

No.

Bolt

Dia.

Metric

mm

D

(O.D.)

d

(I.D.)

t

Thicknes

O.H.

(Overall Ht.)

Calc. Load**

at flat Lbs.

55-03-01 - 3 .244 .122 .024 .037 700
55-03-51 #6 3.5 .284 .140 .028 .043 930
55-04-01 #8 4 .323 .162 .032 .045 900
55-05-01 #10 5 .402 .201 .039 .059 1700
55-06-01 - 6 .481 .240 .047 .071 2500
55-07-21 9/32" 7 .559 .284 .055 .081 3200
55-08-01 5/16" 8 .638 .323 .055 .095 3800
55-10-21 3/8" 10 .798 .402 .063 .095 2700
55-12-4l 7/16" 12 .955 .489 .063 .102 2300

(Typical Use: In confined space under socket head cap screw)

**Please Note: Loads are computed. Actual loads are obtained in practice can vary as much as 25% due to fluctuation in overall height tolerances

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