Field knowledge
The counter's reference shelf.
Everything here is the same material we use to identify parts at the counter — thread charts, pressure tables, and the judgment calls between look-alike fittings. Free to use, bookmark, and print.
Thread identification
14 thread families, demystified.
37° flare
JIC 37° Flare (SAE J514)
Identify →
Flat face
O-Ring Face Seal — ORFS (SAE J1453)
Identify →
Flat face
Flat-Face & Metric Face-Seal Variants
Identify →
60° tapered thread
NPT / NPTF Tapered Pipe (SAE J516)
Identify →
Parallel thread; 60° cone or bonded washer
BSPP — British Parallel (G thread)
Identify →
55° tapered thread
BSPT — British Tapered (R thread)
Identify →
24° cone
DIN Metric Light Series (L) — 24° Cone
Identify →
24° cone
DIN Metric Heavy Series (S) — 24° Cone
Identify →
Straight thread port
SAE O-Ring Boss — ORB (SAE J1926)
Identify →
30° cone
JIS 30° Cone (JIS B8363)
Identify →
Flange face
SAE Code 61 Flange (SAE J518)
Identify →
Flange face
SAE Code 62 Flange (SAE J518)
Identify →
Various
AC Line Fittings (Tube-O, Spring Lock, Block)
Identify →
Straight metric port
Metric Parallel Port Threads (ISO 6149 / DIN 3852)
Identify →
Hose specifications
Pressure charts for 10 standards.
SAE 100R1 / EN 853 1SN
-40°F to +212°F
SAE 100R2 / EN 853 2SN
-40°F to +212°F
SAE 100R4 — Suction & Return
-40°F to +212°F
SAE 100R12 — 4-Spiral
-40°F to +250°F
SAE 100R13 — 6-Spiral 5,000 PSI
-40°F to +250°F
SAE 100R15 — 6,000 PSI Constant
-40°F to +250°F
SAE 100R17 — Compact 3,000 PSI
-40°F to +212°F
EN 856 4SP — European 4-Spiral
-40°F to +212°F
EN 856 4SH — European Heavy 4-Spiral
-40°F to +212°F
EN 853 — European Braid Hose Family
-40°F to +212°F