Spline Sockets

• Proto® Spline tools are designed to service high tensile strength fasteners used widely on military and commercial aircraft and in heavy machinery applications where vibration is prevalent
• Spline sockets help tighten high strength bolts to high torque loads
• They are also used in automotive and industrial areas where high performance torque needs to be achieved
• They help lower the force required to turn standard fasteners by allowing the torque load to be moved away from the corners to help prevent fastener rounding

SKT 1DR 1 #32 12-SPLN

Spline Sockets

Product Number

Drive Size

No. of Points

Drive Type

Opening Size

Tip Size

Tip Size Symbol (Nom)

Tip Thickness

Tip Width

Bit Length

Tip Type

Shank Length

Socket Length

Head Width

Overall Length

Measuring System

Locking Type

Drain Size

Operating Type

Material

Price

Quantity

577-09915

6

#5 Spline

15/16 in

Box

1 5/8 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $78.55 TODAY: $70.69 Sold-As: 1

Not In Stock

577-09916

6

#5 Spline

1 in

Box

1 11/16 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $78.55 TODAY: $70.69 Sold-As: 1

Not In Stock

577-09917

6

#5 Spline

1.009 in

Box

1 11/16 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $87.28 TODAY: $78.55 Sold-As: 1

Not In Stock

577-09918

6

#5 Spline

1 1/8 in

Box

1 7/8 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09919

6

#5 Spline

1 3/16 in

Box

1 7/8 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $87.28 TODAY: $78.55 Sold-As: 1

Not In Stock

577-09920

6

#5 Spline

1 1/4 in

Box

2 3/8 in (opening side), 2 3/8 in (drive side)

3 1/4 in

Inch

Pin

Forged Alloy Steel

List Price: $93.09 TODAY: $83.78 Sold-As: 1

Not In Stock

577-09921

6

#5 Spline

1 5/16 in

Box

2 3/8 in (opening side), 2 3/8 in (drive side)

3 1/4 in

Inch

Pin

Forged Alloy Steel

List Price: $87.28 TODAY: $78.55 Sold-As: 1

Not In Stock

577-09922

6

#5 Spline

1 3/8 in

Box

2 3/8 in (opening side), 2 3/8 in (drive side)

3 3/8 in

Inch

Pin

Forged Alloy Steel

List Price: $87.28 TODAY: $78.55 Sold-As: 1

Not In Stock

577-09923

6

#5 Spline

1 7/16 in

Box

2 1/2 in (opening side), 2 3/8 in (drive side)

3 3/8 in

Inch

Pin

Forged Alloy Steel

List Price: $98.75 TODAY: $88.88 Sold-As: 1

Not In Stock

577-09924

6

#5 Spline

1 1/2 in

Box

2 1/2 in (opening side), 2 3/8 in (drive side)

3 3/8 in

Inch

Pin

Forged Alloy Steel

List Price: $103.24 TODAY: $92.92 Sold-As: 1

Not In Stock

577-09925

6

#5 Spline

1 9/16 in

Box

2 3/4 in (opening side), 2 3/8 in (drive side)

3 1/2 in

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09926

6

#5 Spline

1 5/8 in

Box

2 3/4 in (opening side), 2 3/8 in (drive side)

3 5/8 in

Inch

Pin

Forged Alloy Steel

List Price: $98.58 TODAY: $88.72 Sold-As: 1

Not In Stock

577-09927

6

#5 Spline

1 11/16 in

Box

2 15/16 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $104.59 TODAY: $94.13 Sold-As: 1

Not In Stock

577-09928

6

#5 Spline

1 3/4 in

Box

2 15/16 in (opening side), 2 3/8 in (drive side)

3 47/64 in

Inch

Pin

Forged Alloy Steel

List Price: $114.13 TODAY: $102.72 Sold-As: 1

Not In Stock

577-09929

6

#5 Spline

1 13/16 in

Box

3 1/8 in (opening side), 2 3/8 in (drive side)

3 7/16 in

Inch

Pin

Forged Alloy Steel

List Price: $114.64 TODAY: $103.18 Sold-As: 1

Not In Stock

577-09930

6

#5 Spline

1 7/8 in

Box

3 1/8 in (opening side), 2 3/8 in (drive side)

3 17/32 in

Inch

Pin

Forged Alloy Steel

List Price: $117.56 TODAY: $105.80 Sold-As: 1

Not In Stock

577-09931

6

#5 Spline

1 15/16 in

Box

3 1/8 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09932

6

#5 Spline

2 in

Box

3 1/4 in (opening side), 2 3/8 in (drive side)

3 17/32 in

Inch

Pin

Forged Alloy Steel

List Price: $122.15 TODAY: $109.94 Sold-As: 1

Not In Stock

577-09933

6

#5 Spline

2 1/16 in

Box

3 1/4 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $124.74 TODAY: $112.27 Sold-As: 1

Not In Stock

577-09934

6

#5 Spline

2 1/8 in

Box

3 1/2 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09935

6

#5 Spline

2 3/16 in

Box

3 1/2 in (opening side), 2 3/8 in (drive side)

3 3/4 in

Inch

Pin

Forged Alloy Steel

List Price: $144.13 TODAY: $129.72 Sold-As: 1

Not In Stock

577-09936

6

#5 Spline

2 1/4 in

Box

3 1/2 in (opening side), 2 3/8 in (drive side)

4 3/16 in

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09937

6

#5 Spline

2 5/16 in

Box

3 1/2 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09938

6

#5 Spline

2 3/8 in

Box

3 3/4 in (opening side), 2 3/8 in (drive side)

3 57/64 in

Inch

Pin

Forged Alloy Steel

List Price: $180.02 TODAY: $162.02 Sold-As: 1

Not In Stock

577-09939

6

#5 Spline

2 3/8 in

Box

3 3/4 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $173.99 TODAY: $156.59 Sold-As: 1

Not In Stock

577-09940

6

#5 Spline

2 1/2 in

Box

3 3/4 in (opening side), 2 3/8 in (drive side)

Inch

Pin

Forged Alloy Steel

List Price: $177.83 TODAY: $160.05 Sold-As: 1

Not In Stock

577-09941

6

#5 Spline

2 9/16 in

Box

3 3/4 in (opening side), 2 3/8 in (drive side)

4 3/8 in

Inch

Pin

Forged Alloy Steel

List Price: $201.14 TODAY: $181.03 Sold-As: 1

Not In Stock

577-09942

6

#5 Spline

2 5/8 in

Box

4 1/8 in (opening side), 2 3/8 in (drive side)

4 1/2 in

Inch

Pin

Forged Alloy Steel

List Price: $196.69 TODAY: $177.02 Sold-As: 1

Not In Stock

577-09944

6

#5 Spline

2 3/4 in

Box

4 1/4 in (opening side), 2 3/8 in (drive side)

4 1/4 in

Inch

Pin

Forged Alloy Steel

List Price: $216.26 TODAY: $194.63 Sold-As: 1

Not In Stock

577-09947

6

#5 Spline

2 15/16 in

Box

4 1/2 in (opening side), 2 3/8 in (drive side)

4 13/16 in

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09948

6

#5 Spline

3 in

Box

4 1/2 in (opening side), 2 3/8 in (drive side)

4 39/64 in

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-09950

6

#5 Spline

3 1/8 in

Box

4 3/4 in (opening side), 2 3/8 in (drive side)

4 39/64 in

Inch

Pin

Forged Alloy Steel

Discontinued

Discontinued

577-4708SPL

1/4 in

12

#8 Spline

1/4 in

0.370 in (opening side), 0.430 in (drive side)

0.920 in

Inch

Forged Alloy Steel

List Price: $30.96 TODAY: $27.86 Sold-As: 1

Not In Stock

577-5324DPL

1/2 in

12

#24 Spline

3/4 in

1 3/64 in (opening side), 1 3/64 in (drive side)

3 3/8 in

Inch

Forged Alloy Steel

List Price: $72.06 TODAY: $64.85 Sold-As: 1

Not In Stock

577-5426SPL

1/2 in

12

#26 Spline

13/16 in

1 1/8 in (opening side), 1 1/8 in (drive side)

1 9/16 in

Inch

Forged Alloy Steel

List Price: $59.55 TODAY: $53.59 Sold-As: 1

Not In Stock

577-5732SPL

1 in

12

#32 Spline

1 in

1 1/2 in (opening side), 1 7/8 in (drive side)

2 7/16 in

Inch

Forged Alloy Steel

List Price: $128.39 TODAY: $115.55 Sold-As: 1

Not In Stock