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Pilot Diameter

Cutting Diameter

Number of Flutes

Counterbore Diameter

Overall Length

Shank Diameter

Material

Finish/Coating

Standards Met

Insert Size

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Metric
To suit bolt ISO Metric/Din Standards
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

Series G125 HSS Straight Shank Counterbore - Metric 

HSS 180° . Manufactured to DIN 373

Plain Shank
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to manufacturers standard

CT MULTI counterbores are suitable for producing cuts for cylinder head bolts, ejector pins, on 
cuts, sealing surfaces, etc. The integrated cooling duct of the countersink results in improved life 
time characteristics of the carbide indexable inserts.

2 flute counterbore cutters with screwed shanks. Designed to recess holes for cap headed screws. Manufactured from T1 grade HSS.

Metric
Spiral 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface.

Single point counterbores are designed for concentrically boring out pre-drilled or cored holes prior to reaming or to counterbore a hole. Used in conjunction with the Type 49035 eccentric clamping collar these tools are able to finish the bore to size by virtue of the /-0.5mm adjustment provided by the collar. Use single point tools for guaranteed concentricity. Will continue to operate effectively at a maximum of 5 x D. High tool rigidity gives maximum accuracy. Plain (Type 49030)

Used for the production milling of pre-drilled holes to allow bolt or cap screw heads to lie flush with the component surface.  Manufactured from M35 HSS.

Single point counterbores are designed for concentrically boring out pre-drilled or cored holes prior to reaming or to counterbore a hole. Used in conjunction with the Type 49035 eccentric clamping collar these tools are able to finish the bore to size by virtue of the /-0.5mm adjustment provided by the collar. Use single point tools for guaranteed concentricity. Will continue to operate effectively at a maximum of 5 x D. High tool rigidity gives maximum accuracy. Through coolant (Type 49038)

With the Neptune Back-spotfacer you can produce spotfaces of up to two times the diameter of the hole. As a special, the tool can be manufactured for an even wider range. Neptune is powered by coolant through the spindle. It operates using a piston in the shank, which pushes the insert holder out.The Neptune is a combination tool, where you can strip, and clean the parts, change insert holder for another dimension etc. The tool is also equipped with an emergency" function. The shank separates from the holder in case the insert holder doesn"t retract properly. The spindle needs to be reversed during retraction after the spotfacing to ensure that the emergency function operates. All friction parts are coated with a low friction coating to ensure the function of the tool.

For specification and dimensional information please refer to our catalogue.

Spiral, 3 flute. Medium duty. Sizes: M3, M4, M5, M6, M8, M10, M12.

M3-M12 Plain Shank Counterbores (Set-7)

Left hand rotation. 45mm overall length with 10mm shank. Flatted shank. 5mm drill hole diameter. Drill supplied separately. 10mm counterbore depth.

CB1038 Router Cutter

Metric
To suit bolt ISO Metric/Din Standards
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

10MM HSS 3FL Scr/Shk Sp/F L Counterbore

Series G125 HSS Straight Shank Counterbore - Metric 

HSS 180° . Manufactured to DIN 373

G125 11X6.60MM HSS S/S Counterbore

Plain Shank
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

16MM HSS 3FL Str/Shk Sp/F L Counterbore

CT MULTI counterbores are suitable for producing cuts for cylinder head bolts, ejector pins, on 
cuts, sealing surfaces, etc. The integrated cooling duct of the countersink results in improved life 
time characteristics of the carbide indexable inserts.

MPHT-N14-P Insert Grade PMK92

Counterbore with a slow spiral drill fitted. Tungsten Carbide Tipped for use in abrasive materials.

SNAP/CB/3TC TC Counterbore

G125 6.5X3.4MM HSS Straight Shank 180DEG Counterbore DIN 373

The Trend CB Counterbore is extensively used for recessing bolt and screw heads and is supplied with a HSS slow spiral drill bit. Fully adjustable, a hex key is supplied. The TCT version is used for plywood, particle boards and plastics (abrasive). To be used at drilling speeds only, they are not suitable for ferrous and non-ferrous metals. When setting up, ensure the flutes of the drill are aligned with the flute of the counterbore. For replacement twist drills, use slow spiral type e.g., 501/532 to 501/012. D 9.5mm. D2 3.96mm. OL 75mm.

CB38-532 TCT CB Counterbore TRECB38532TC

Counterbore with a slow spiral drill fitted. Tungsten Carbide Tipped for use in abrasive materials. Specifications D1 3/16 inch D1 4.75 mm D2 1/2 inch D2 12.7 mm Shank Diameter 1/4 inch.

SNAP/CB/3TC TCT Tipped Counterbore 4.75 x 12.7mm TRESNAPCB3TC

Thread size: 3/8"
Pilot dia.: 13/32"
Overall length: 3 1/2"

3/8" Screwed Shank Counterbore

Metric
Spiral 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface.

1/8"x1/4" 3FL Str/Shk Sp/Fl Counterbore

49030 25.80mm Single Point Counterbore

To suit bolts manufactured to ISO Metric/DIN Standards.

9/16" Bolt Size HSS 3FL Scr/Shk Sp/Fl Counterbore

49038 16MM Thru-Coolant Counterbore

The CB counter bores are extensively used for recessing bolt and screw heads. 

• Supplied with a HSS slow spiral drill bit. Fully adjustable, a hex key is supplied. 

• TCT version is used for plywood, particle boards and plastics (abrasive). 

• Use a drilling speeds only. 

• Not suitable for ferrous and non-ferrous metals. 

• When setting-up, ensure flutes of drill are aligned with flute of counterbore.

CB38-316 TC Professional 3/8IN TCT Counterbore with 3/16IN HSS Slow Spiral Drill

With the Neptune Back-spotfacer you can produce spotfaces of up to two times the diameter of the hole. As a special, the tool can be manufactured for an even wider range. Neptune is powered by coolant through the spindle. It operates using a piston in the shank, which pushes the insert holder out.The Neptune is a combination tool, where you can strip, and clean the parts, change insert holder for another dimension etc. The tool is also equipped with an emergency" function. The shank separates from the holder in case the insert holder doesn"t retract properly. The spindle needs to be reversed during retraction after the spotfacing to ensure that the emergency function operates. All friction parts are coated with a low friction coating to ensure the function of the tool.

For specification and dimensional information please refer to our catalogue.

NE-15, 0/30, 0 Neptune Back Spot Facer

NE-13, 0/26, 0 Neptune Back Spotfacer

Code 0031 180� Piloted Counterbore. HSS-E (M35 Cob) DIN 373. Tolerance : D = z9, d = e8, L = � 1, ? = �1�.

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