C.S. Osborne

New Jersey, USA-based maker for shoemaking, leatherworking, upholstery, and other craft tools for the industrial market, including knives. Also sells tapers.

Tapers

Ply Diameter Length (Shank to Shank)
4 .040″ 60″ or 72″
5 .045″ 60″ or 72″
7 .055″ 60″ or 72″

Colors: Black, Brown, Natural, White

Note: ZegZug and Sorrell Notions and Findings offer 110″ tapers that seem very similar:

Needles

Note: Osborne states needle gauges in British Standard Wire Gauge. They call it “English Gauge”.

Curved Needles

Series Model Point Size Gauge Eye to Point UPC Description Notes
513 2 Round 2″ 19 1½″ 15196 Cord Light
513 Round 2½″ 19 1¾″ 15198 Cord Light
513X 2 Round 2″ 23 1½″ 15192 Cord Extra Light
513X Round 2½″ 23 1¾″ 15194 Cord Extra Light
501X 2 Round 2″ 21 1½″ 15112 Extra Light
501X Round 2½″ 20 1¾″ 15114 Extra Light
501X 3 Round 3″ 19 2″ 15116 Extra Light Broke repeatedly inseaming with 5- and 7-cord hemp thread.
501X Round 3½″ 18 2⅜″ 15118 Extra Light
501X 4 Round 4″ 18 2¾″ 15120 Extra Light
521 40mm Round 1 9/16″     24260 Silk/Billiar
Stated Length Eye to Point
2″ 1½″
2½″ 1¾″
3″ 2″
3½″ 2⅜″
4″ 2¾″
5″ 3⅜″
6″ 4″
7″ 4¾″
8″ 5¼″
9″ 6″
10″ 6¾″

Harness Needles

Straight needles can be heated and bent.

Number UPC Length Gauge Diameter
517-000 15672 2⅜″ 16 .064″≈1.626mm
517-00 15674 2⅜″ 17 .056″≈1.422mm
517-0 15676 2⅜″ 18 .048″≈1.219mm
517-1 15678 2⅜″ 19 .040″≈1.016mm
517-2 15680 2¼″ 19 .040″≈1.016mm
517-3 15682 2⅛″ 20 .036″≈0.914mm
517-4 15684 1⅞″ 20 .036″≈0.914mm
517-5 15686 1⅞″ 21 .032″≈0.813mm
517-6 15688 1​9⁄16″ 21 .032″≈0.813mm
517-7 15690 1⅝″ 22 .028″≈0.711mm

Blunt Harness Needles

Number UPC Length Gauge Diameter
559-5 15700 5″ 10 .128″=3.251mm

Glovers’ Needles

Number UPC Length Gauge Diameter
518-000 15712 2 5/16″ 17 .056″≈1.422mm
518-00 15714 2 1/16″ 17 .056″≈1.422mm
518-0 15716 2″ 18 .048″≈1.219mm
518-1 15718 1 7/8″ 18 .048″≈1.219mm
518-2 15720 1 13/16″ 18 .048″≈1.219mm
518-3 15722 1 11/16″ 19 .040″≈1.016mm
518-4 15724 1 5/8″ 19 .040″≈1.016mm
518-5 15726 1 9/16″ 20 .036″≈0.914mm
518-6 15728 1 7/16″ 20 .036″≈0.914mm
518-7 15730 1 3/8″ 22 .028″≈0.711mm
518-8 15732 1 1/4″ 23 0.024″≈0.610mm

Awl Blades

Leather / Saddler’s Harness Awl Blades

Leather Tools Website Product Page

Number UPC Stated Measured
Length Length Long Edge to Edge Short Edge to Edge
42 62100 1½″ 1.584″≈40.24mm 0.113″≈2.87mm 0.051″≈1.29mm
43 62102 1¾″      
44 62104 2″ 1.940″≈49.27mm 0.114″≈2.89mm 0.064″≈1.63mm
45 62106 2¼″      
46 62108 2½″ 2.565″≈65.16mm 0.157″≈4.00mm 0.081″≈2.07mm
47 62110 2⅝″      
48 62112 2¾″ 2.743″≈69.66mm 0.144″≈3.67mm 0.067″≈1.70mm
49 62114 2⅞″      
50 62116 3″ 2.896″≈73.55mm 0.146″≈3.70mm 0.076″≈1.94mm
52 62118 3¼″      

Curved Awl Blades

Curved Flat-Point Awl Blades

Product Page 

No UPC Overall Length (stated) Widest Part of Flat (measured) Length After Bend (measured)
31 2½ 62082 2½″ 0.114″≈2.9mm 0.295″≈7.5mm
31 3 62084 3″ 0.108″≈2.75mm 0.315″≈8.0mm
31 3½ 62086 3½″ 0.150″≈3.8mm 0.354″≈9.0mm

Curved Round-Point Awl Blades

Curved Double-Point Awl Blades

Moccasin Awl Blades

Product Page

Number UPC Stated Measured
Length Long Edge to Edge Short Edge to Edge
M32 65200 3½″ 0.155″≈3.93mm 0.086″≈2.18mm
M34 65202 4″ 0.169″≈4.28mm 0.113″≈2.86mm

257 Eyelet Setter

The eyelet goes on the side with the protruding, spring-loaded post.

The washer goes on the fixed anvil.

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