Nuts & Bolts - Guide
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About this app
Nuts & Bolts - Guide is a comprehensive reference tool for machinists, engineers, hobbyists, and DIY enthusiasts. Quickly look up screw dimensions, tap drill sizes, and clearance holes for both metric and imperial fasteners.
WORKS COMPLETELY OFFLINE
All data is stored locally on your device. No internet connection required - perfect for workshops, garages, and job sites where connectivity is limited.
METRIC FASTENERS (M1 - M36)
• Thread dimensions: major, minor, and pitch diameter
• Coarse and fine pitch specifications
• Tap drill sizes for 75% and 50% thread engagement
• Clearance hole sizes: close, normal, and free fit
IMPERIAL FASTENERS (#0 - 2")
• UNC (Coarse) and UNF (Fine) thread data
• Number sizes (#0 to #14) and fractional sizes (1/4" to 2")
• Tap drill sizes in decimal, fractional, and letter/number formats
• Clearance hole recommendations
HEAD TYPE DIMENSIONS
Reference dimensions for common fastener head styles:
• Socket Head Cap Screws (SHCS)
• Pan Head
• Flat/Countersunk (82° and 90°)
• Button Head
• Hex Head
• And more...
Each head type includes:
• Head diameter and height
• Drive type and size (hex key, Phillips, etc.)
• Applicable standards (DIN, ANSI/ASME)
ADDITIONAL TOOLS
• Unit converter: inches to millimeters
• Fractional to decimal conversion
• Drill size lookup table
PRO FEATURES
Upgrade to PRO for complete access:
• All metric sizes (M1 to M36)
• All imperial sizes (#0 to 2")
• Fine and extra-fine pitch threads
• All head type dimensions
• 50% thread tap drill data
• Clearance hole information
• Favorites for quick access
• Ad-free experience
DESIGNED FOR THE WORKSHOP
• Clean, easy-to-read interface
• Large text for quick reference
• Dark mode support
• Fast navigation between sizes
Whether you're a machinist selecting tap drills, an engineer designing threaded holes, a 3D printing enthusiast sizing screw bosses, or a DIYer working on a project - this app provides the fastener data you need.
Everything you need for the workshop - download now.
WORKS COMPLETELY OFFLINE
All data is stored locally on your device. No internet connection required - perfect for workshops, garages, and job sites where connectivity is limited.
METRIC FASTENERS (M1 - M36)
• Thread dimensions: major, minor, and pitch diameter
• Coarse and fine pitch specifications
• Tap drill sizes for 75% and 50% thread engagement
• Clearance hole sizes: close, normal, and free fit
IMPERIAL FASTENERS (#0 - 2")
• UNC (Coarse) and UNF (Fine) thread data
• Number sizes (#0 to #14) and fractional sizes (1/4" to 2")
• Tap drill sizes in decimal, fractional, and letter/number formats
• Clearance hole recommendations
HEAD TYPE DIMENSIONS
Reference dimensions for common fastener head styles:
• Socket Head Cap Screws (SHCS)
• Pan Head
• Flat/Countersunk (82° and 90°)
• Button Head
• Hex Head
• And more...
Each head type includes:
• Head diameter and height
• Drive type and size (hex key, Phillips, etc.)
• Applicable standards (DIN, ANSI/ASME)
ADDITIONAL TOOLS
• Unit converter: inches to millimeters
• Fractional to decimal conversion
• Drill size lookup table
PRO FEATURES
Upgrade to PRO for complete access:
• All metric sizes (M1 to M36)
• All imperial sizes (#0 to 2")
• Fine and extra-fine pitch threads
• All head type dimensions
• 50% thread tap drill data
• Clearance hole information
• Favorites for quick access
• Ad-free experience
DESIGNED FOR THE WORKSHOP
• Clean, easy-to-read interface
• Large text for quick reference
• Dark mode support
• Fast navigation between sizes
Whether you're a machinist selecting tap drills, an engineer designing threaded holes, a 3D printing enthusiast sizing screw bosses, or a DIYer working on a project - this app provides the fastener data you need.
Everything you need for the workshop - download now.
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What’s new
Welcome to Nuts & Bolts - Guide!
Your complete fastener reference for the workshop:
• Thread specs: metric M1-M36, imperial #0-2"
• Tap drills & clearance holes
• Head type dimensions
• Engineering calculators
• Works 100% offline - no WiFi needed
Your complete fastener reference for the workshop:
• Thread specs: metric M1-M36, imperial #0-2"
• Tap drills & clearance holes
• Head type dimensions
• Engineering calculators
• Works 100% offline - no WiFi needed
App support
About the developer
Ramanathan Perumal
team@multiscal.com
17 15,5 North Street
Jakkamptti
Aundipatti, Tamil Nadu 625512
India
