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IS Counterbore/Countersink

Freer Tool & Supply’s IS counterbore and countersink collection supports clean, accurate hole finishing and proper fastener seating in machining, fabrication, and assembly work. Counterbores create flat-bottom recesses for socket head and cap screws, while countersinks add the chamfer needed for flat head screws and smoother hole entrances—helping improve fit, alignment, and overall assembly quality.

Alvord Polk BL5403036 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

Alvord Polk BL5403036 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

SKU: FTS-BL5403036
MPN: 3036

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Alvord Polk BL5403037 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

Alvord Polk BL5403037 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

SKU: FTS-BL5403037
MPN: 3037

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Alvord Polk BL5403038 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

Alvord Polk BL5403038 7/8 Screw Size-8-1/8 OAL-HSS-Straight Shank Capscrew Counterbore

SKU: FTS-BL5403038
MPN: 3038

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Alvord Polk BL5433000 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433000 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433000
MPN: 33000

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Alvord Polk BL5433001 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433001 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433001
MPN: 33001

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Alvord Polk BL5433002 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433002 #4 Screw Size-3-7/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433002
MPN: 33002

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Alvord Polk BL5433003 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433003 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433003
MPN: 33003

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Alvord Polk BL5433004 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433004 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433004
MPN: 33004

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Alvord Polk BL5433005 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433005 #5 Screw Size-4-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433005
MPN: 33005

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Alvord Polk BL5433006 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433006 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433006
MPN: 33006

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Alvord Polk BL5433007 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433007 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433007
MPN: 33007

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Alvord Polk BL5433008 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433008 #6 Screw Size-4-5/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433008
MPN: 33008

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Alvord Polk BL5433009 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433009 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433009
MPN: 33009

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Alvord Polk BL5433010 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433010 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433010
MPN: 33010

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Alvord Polk BL5433011 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433011 #8 Screw Size-5 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433011
MPN: 33011

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Alvord Polk BL5433018 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433018 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433018
MPN: 33018

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Alvord Polk BL5433019 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433019 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433019
MPN: 33019

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Alvord Polk BL5433020 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433020 5/16 Screw Size-6-1/8 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433020
MPN: 33020

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Alvord Polk BL5433021 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433021 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433021
MPN: 33021

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Alvord Polk BL5433022 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433022 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433022
MPN: 33022

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Alvord Polk BL5433023 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

Alvord Polk BL5433023 3/8 Screw Size-6-1/2 OAL-HSS-TiN Coated Capscrew Counterbore

SKU: FTS-BL5433023
MPN: 33023

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Alvord Polk BL5433024 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433024 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433024
MPN: 33024

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Alvord Polk BL5433025 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433025 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433025
MPN: 33025

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Alvord Polk BL5433026 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

Alvord Polk BL5433026 7/16 Screw Size-7 OAL-HSS-TiN Coated Straight Shank Capscrew Counterbore

SKU: FTS-BL5433026
MPN: 33026

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