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Ornamental Iron Supply
- Bandsaw Blades
- Power Tools
  
  Grinders
  Sanders
- Cutting & Grinding
  
  T27 Abrasive Wheels
  Mounted Point Grinding Stones
  Carbide Burrs
- Graining
  
  General Purpose Abrasive Belts
  Stainless Steel Abrasive Belts
  Scotch-Brite™ Surface Conditioning Belts
  Flap Brushes
  Abrasive Discs
- Buffing & Polishing
  
  Treated Pleated Buffing Wheels & Accessories
  Untreated Pleated Buffing Wheels & Accessories
- Jax Patinas
- Installation
- Lubricants
  
  Cutting Lubricants
  Polishing Lubricants & Cleaners
Steel Erector Tools
- Annular Cutters
  
  Carbide Tipped Annular Cutters
  High Speed Steel Annular Cutters
  Ejector Pin HSS
  Annular Cutter Holders
  Carbide Tipped Hole Cutters
- Back Out Punches
- Barrel Pins & Bull Pins
  
  Barrel Pins
  Broad Head Bull Pins
- Bazooka Plumb Bob
- Bridge Reamers
  
  1/2" Straight Shank Bridge Reamers
  Taper Shank Bridge Reamers
  Hex Shank Bridge Reamers
- Button Punch Tool - Deck Crimping Tool - Seam Locking Tool - Punch Lock Tool
- Carbide Burrs
  
  Carbide Burrs - Single Cut
  Carbide Burrs - Double Cut
- Clamps
  
  Bridge Clamps
  Drop Forged C-Clamps
  Bar Clamps
- Construction Bars
- Countersinks / Chamfer Tools & Counterbores
- Drill Bits
  
  S&D Drill Bits
  Jobber Length Drill Bits
- Fall Protection Equipment
  
  Hi-Visibility Safety Vests
  Beam Anchors and Bolt Anchors
  Rope Grabs
  Fall Protection Lanyards
  Fall Protection Self-Retracting Lifelines
  Full Body Harnesses
  Carabiners
- Hex Bit Sockets
  
  Hex Bit Socket | Chrome
  Hex Bit Impact Sockets
- Hilman
  
  Hilman Rollers
  Hilman Tri-Glide
  Hilman Hydraulic Toe Jacks
- Hydraulic Equipment
  
  Hilman Hydraulic Toe Jacks
  Simplex Hydraulic Pumps
  Simplex Hydraulic Rams
  Hydraulic Accessories
  Hydraulic Spreaders
  Simplex Hydraulic Nut Splitters
- Impact Sockets
  
  Impact Socket Sets
  6 Point Impact Sockets
  8pt Standard & Deep Impact Sockets
  12 Point Impact Sockets
  Impact Adapters, Extensions and Universal Joints
- Ironworker Tools & Gear
  
  Ironworker Hammers & Backout Punches
  Tool Holders & Pouches
  Ironworker Tool Belts
  Klein Tools
  Channellock
  Ironworker Thread Repair
- Lifting Equipment
  
  Beam Trolleys
  Beam Clamps
  General Beam Clamps
  Chain Hoist - Lever
  Ratchet Hoist
  Hand Chain Hoists
  Cable Winch-Hoists
  Lifting Jacks
- Eyebolts & Hoist Rings
  
  Fractional Eye Bolts
  Fractional Swivel Hoist Rings
- Magnetic Base Drills
  
  Euroboor
  Fein
  Milwaukee
  Unibor
  CS Unitec
- Metal Cutting Bandsaw Blades
- Metal Cutting Fluids & Protectants
- Power Tools | Steel Construction
  
  Angle Grinders
  Die Grinders
  Electric Reamer & Drill Driver
  Impact Wrenches
  Metal Cutting Saws | Blades
  Power Tools | Battery
  Shear Wrench
- Rivet Busters | Tools | Accessories
  
  Rivet Busters
  Rivet Buster Tools
  Rivet Buster Accessories
- Steel Wedges
- Transfer Punches
- Thread Removal Picks
- Wedge and Shim sets (Feathers & Wedge)
- Wrenches
  
  Combination Wrenches
  Long Arm Allen Wrenches
  Open End Engineers Wrench
  Box End Spud Wrenches
  Steel Erection Spud Wrenches
  Striking Wrenches
  Torque Wrenches and Multipliers
Taps & Dies
- ACME Taps
- British Taps
  
  British Standard Fine (BSF) Thread Taps
  British Standard Whitworth (BSW) Thread Taps
  British Standard Pipe Parallel (BSPP)
  British Standard Pipe Taper (BSPT)
- Fractional Thread Dies
  
  Thread Die #000 - #34
  Thread Die 1/16" - 2"
  Thread Die 2-1/16" - 6"
- Fractional Thread Taps
  
  Thread Tap #000 - #34
  Thread Tap 1/16" Diameter - 15/32" Diameter
  Thread Tap 1/2" Diameter - 15/16" Diameter
  Thread Tap 1" Diameter - 1-7/16" Diameter
  Thread Tap 1-1/2" Diameter - 1-15/16" Diameter
  Thread Tap 2" Diameter - 2-7/8" Diameter
  Thread Tap 3" Diameter - 6-1/2" Diameter
- Pipe Taps (NPT & NPS)
- Pipe Dies (NPT & NPS)
- Power Tools Thread Repair
- Tap & Die Holders
  
  Tap Wrenches
  Die Holders
  Tap Drivers
  Impact Socket Driver
- Tap & Die Sets
- Thread Cutting Fluid
- Thread Repair Files
- Thread Repair Kits & Inserts
  
  Helical Threaded Inserts
  Thread Repair Kits
- Screw Pitch Gauges
Metric Tools
- Metric Drill Bits
  
  Metric Drills .15mm - 1mm
  Metric Drills 1.10mm - 5mm
  Metric Drills 5.10mm - 10mm
  Metric Drills 10.20mm - 31mm
  Metric Drills 32mm - 38mm
- Metric Eye Bolts & Hoist Rings
  
  Metric Eye Bolts
  Metric Hoist Rings
- Metric Hex Bit Sockets
  
  Metric Hex Bit Sockets | Impact
  Metric Hex Bit Sockets | Chrome
  Metric Hex Bit Inserts
- Metric Machine Reamers
- Metric Screw Pitch Gauges
- Metric Sockets
  
  Metric Chrome Sockets
  Metric Impact Sockets
- Metric Tap & Die Sets
- Metric Thread Dies
  
  Metric Thread Dies | M1 - M9
  Metric Thread Dies | M10 - M19
  Metric Thread Dies | M20 - M29
  Metric Thread Dies | M30 - M100
- Metric Thread Taps
  
  Metric Thread Taps | M1 - M2.8
  Metric Thread Taps | M3 - M12
  Metric Thread Taps | M13 - M25
  Metric Thread Taps | M26 - M44
  Metric Thread Taps | M45 - M110
- Metric Thread Repair Files
- Metric Thread Repair Kits & Inserts
  
  Metric Thread Repair Kits
  Metric Helical Threaded Inserts
- Metric Wrenches
  
  Metric Allen and T-Handle Wrenches
  Metric Combination Wrenches
  Metric Striking Wrenches
- Power Tools Thread Repair
- Tap & Die Holders
  
  Tap Wrenches
  Die Holders
  Tap Drivers
  Impact Socket Driver
- Thread Cutting Fluid
Dock Builder Supplies
- Auger Bits
  
  Carbide Tipped Wood Auger Bits
  HSS Wood Auger Bits
  Double Twist Timber Auger Bit | HSS
- Auger Adapters
- Composite Drilling
- Diamond Core Drill & Bits
- Masonary Drill | Rebar Cutter
- Power Tools | Marine Construction
  
  Air Power Tools
  Underwater Hydraulic Power Tools
  Power Tools | Electric & Battery
- Self - Feed Wood Drill Bits
  
  Self-Feed Drill Bits
  Self - Feed Bit | Pilots
  Self - Feed Bit | Drive Adapters
- Splitting Wedge
On-Site Field Machining
- 3M™ Adflo™ Powered Air Welding Helmet
- Annular Cutters
  
  Carbide Tipped Annular Cutters
  High Speed Steel Annular Cutters
  Annular Cutter Holders
  Carbide Tipped Hole Cutters
  Countersinks / Chamfer Tools & Counterbores
  Magnetic Base Drills
- Cameron Ball Gages
- Copper & Aluminum Soft Drivers
- Countersinks / Chamfer Tools & Counterbores
- English File Cup Wheels
- Tapping & Threading
  
  Taps & Dies | 8 Pitch
  Tap & Die Holders
  Thread Removal Picks
  Thread Repair Kits
- J Seal Caulking Chisels
- Power Plant | Outage Supplies
  
  Protectants & Sealants
  Abrasives & Holders
  Stainless Steel Shim Stock
  Steel Wedges
  Alinco Triple Boiled Linseed Oil
  Flame Resistant Coveralls
- Power Tools | Field Machining
  
  Peening Guns
  DOTCO Grinders
  EUROBOOR Grinders
- Precision Tools
  
  Taper, Radius & Thickness Gages
  Combination Squares & Precision Square
  Straight Edges & Rules
  Precision Center Head
  Dial Calipers, Dial Indicator & Outside Micrometer
  Pin Vise, Scribers & Edge Finders
  Automatic Center Punch & Contact Point Set
- Reduced Eye Bolts
- Shell Reamers & Arbors
- Stainless Steel Shim Stock
  
  Slotted Shim Kits
  Stainless Steel Shim Stock 6"x 50"
  Stainless Steel Shim Stock 12"x 50"
- Stud Removal
  
  Stud Removal Cutter Bushings
  Stud Removal Cutter Pilots
  Stud Removal | 2-1/2" and Under
  Stud Removal | 2-5/8" and Over
- Turbine Services
  
  Metric Tools
Railroad Tools
- Hi-Visibility Safety Vests
- Joint Bar & Specialty Railroad Sockets
  
  6pt Joint Bar Impact Sockets
  8pt Joint Bar Standard & Deep Impact Sockets
  Railroad Lag Screw, Torx Bit & Dome Head Impact Sockets
- Overhead Catenary System Tools
- Pick Mattock, Spike Mauls & Sledge Hammers
- Railroad Adhesives & Applicators
- Rail Chocks & Rail Skates
- Railroad Power Tools
  
  Battery Powered Railroad Power Tools
  Electric Railroad Power Tools
  Hydraulic Railroad Power Tools
  Gas Railroad Power Tools
- Rail Track Abrasives
  
  Flexovit® Rail Track Abrasives
  Norton® Rail Track Abrasives
- Rivet Busters | Tools | Accessories
  
  Rivet Busters
  Rivet Buster Tools
  Rivet Buster Accessories
- Switch Broom & Shovel
- Tongs, Pullers & Clamps
- Track Drill bits
- Railroad Track Ratchets
- Track Gauge & Rail Thermometer
- Wooden Sleeper Tie Boring Bits & Carbide Auger Bits

Ornamental Iron Supply

Bandsaw Blades
Power Tools
- Grinders
- Sanders
Cutting & Grinding
Graining
Buffing & Polishing
- Treated Pleated Buffing Wheels & Accessories
- Untreated Pleated Buffing Wheels & Accessories
Jax Patinas
Installation
Lubricants
- Cutting Lubricants
- Polishing Lubricants & Cleaners

Steel Erector Tools

Annular Cutters
Back Out Punches
Barrel Pins & Bull Pins
- Barrel Pins
- Broad Head Bull Pins
Bazooka Plumb Bob
Bridge Reamers
Button Punch Tool - Deck Crimping Tool - Seam Locking Tool - Punch Lock Tool
Carbide Burrs
- Carbide Burrs - Single Cut
- Carbide Burrs - Double Cut
Clamps
Construction Bars
Countersinks / Chamfer Tools & Counterbores
Drill Bits
- S&D Drill Bits
- Jobber Length Drill Bits
Fall Protection Equipment
Hex Bit Sockets
- Hex Bit Socket | Chrome
- Hex Bit Impact Sockets
Hilman
Hydraulic Equipment
Impact Sockets
Ironworker Tools & Gear
Lifting Equipment
Eyebolts & Hoist Rings
- Fractional Eye Bolts
- Fractional Swivel Hoist Rings
Magnetic Base Drills
- Euroboor
- Fein
- Milwaukee
- Unibor
- CS Unitec
Metal Cutting Bandsaw Blades
Metal Cutting Fluids & Protectants
Power Tools | Steel Construction
Rivet Busters | Tools | Accessories
Steel Wedges
Transfer Punches
Thread Removal Picks
Wedge and Shim sets (Feathers & Wedge)
Wrenches

ACME Taps
British Taps
Fractional Thread Dies
Fractional Thread Taps
Pipe Taps (NPT & NPS)
Pipe Dies (NPT & NPS)
Power Tools Thread Repair
Tap & Die Holders
Tap & Die Sets
Thread Cutting Fluid
Thread Repair Files
Thread Repair Kits & Inserts
- Helical Threaded Inserts
- Thread Repair Kits
Screw Pitch Gauges

Metric Drill Bits
Metric Eye Bolts & Hoist Rings
- Metric Eye Bolts
- Metric Hoist Rings
Metric Hex Bit Sockets
Metric Machine Reamers
Metric Screw Pitch Gauges
Metric Sockets
- Metric Chrome Sockets
- Metric Impact Sockets
Metric Tap & Die Sets
Metric Thread Dies
Metric Thread Taps
Metric Thread Repair Files
Metric Thread Repair Kits & Inserts
- Metric Thread Repair Kits
- Metric Helical Threaded Inserts
Metric Wrenches
Power Tools Thread Repair
Tap & Die Holders
Thread Cutting Fluid

Dock Builder Supplies

Auger Bits
Auger Adapters
Composite Drilling
Diamond Core Drill & Bits
Masonary Drill | Rebar Cutter
Power Tools | Marine Construction
Self - Feed Wood Drill Bits
Splitting Wedge

On-Site Field Machining

3M™ Adflo™ Powered Air Welding Helmet
Annular Cutters
Cameron Ball Gages
Copper & Aluminum Soft Drivers
Countersinks / Chamfer Tools & Counterbores
English File Cup Wheels
Tapping & Threading
J Seal Caulking Chisels
Power Plant | Outage Supplies
Power Tools | Field Machining
Precision Tools
Reduced Eye Bolts
Shell Reamers & Arbors
Stainless Steel Shim Stock
Stud Removal
Turbine Services
- Metric Tools

Hi-Visibility Safety Vests
Joint Bar & Specialty Railroad Sockets
Overhead Catenary System Tools
Pick Mattock, Spike Mauls & Sledge Hammers
Railroad Adhesives & Applicators
Rail Chocks & Rail Skates
Railroad Power Tools
Rail Track Abrasives
- Flexovit® Rail Track Abrasives
- Norton® Rail Track Abrasives
Rivet Busters | Tools | Accessories
Switch Broom & Shovel
Tongs, Pullers & Clamps
Track Drill bits
Railroad Track Ratchets
Track Gauge & Rail Thermometer
Wooden Sleeper Tie Boring Bits & Carbide Auger Bits

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H.D. Chasen Company

(617) 666-9090 | info@hdchasen.com

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4mm Allen Wrench

4mm Allen Wrench

4mm Allen Wrench

$0.81 USD

In stock

This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

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4mm Allen Wrench

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SKU: EKL-4MM

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